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Randomized studies have validated laparoscopic proctectomy for the treatment of rectal cancer as noninferior to an open proctectomy, but most of those studies have included sphincter-preserving resections along with abdominoperineal resection.This study aimed to compare perioperative and long-term oncological outcomes between minimally invasive and open abdominoperineal resection.This study is a retrospective analysis of a prospectively maintained database.The study was conducted in a single specialized colorectal surgery department.All patients who underwent abdominoperineal resection for primary rectal cancer between 2000 and 2016 were included.The primary outcomes measured were the perioperative and long-term oncological outcomes.We included 452 patients, 372 in the open group and 80 in the minimally invasive group, with a median follow-up time of 74 months. There were significant differences between the groups in terms of neoadjuvant radiation treatment (67.5% of the open versus 81.3% of the minimally invasive group, p = 0.01), operative time (mean of 200 minutes versus 287 minutes, p0.0001), and mean length of stay (9.5 days versus 6.6 days, p0.0001). Overall complication rates were similar between the groups (34.5% versus 27.5%, p = 0.177). There were no significant differences in the mean number of lymph nodes harvested (21.7 versus 22.2 nodes, p = 0.7), circumferential radial margins (1.48 cm versus 1.37 cm, p = 0.4), or in the rate of involved radial margins (10.8% versus 6.3%, p = 0.37). Five-year overall survival was 70% in the open group versus 80% in the minimally invasive group (p = 0.344), whereas the 5-year disease-free survival rate in the open group was 63.2% versus 77.6% in the minimally invasive group (p = 0.09).This study was limited because it describes a single referral institution experience.Although both approaches have similar perioperative outcomes, the minimally invasive approach benefits the patients with a shorter length of stay and a lower risk for surgical wound infections. Both approaches yield similar oncological technical quality in terms of the lymph nodes harvested and margins status, and they have comparable long-term oncological outcomes. See Video Abstract at http://links.lww.com/DCR/B754.RESULTADOS A LARGO PLAZO DE LA RESECCIÓN ABDOMINOPERINEAL MÍNIMAMENTE INVASIVA VERSUS ABIERTA PARA EL CÁNCER DE RECTO: EXPERIENCIA DE UN SOLO CENTRO ESPECIALIZADOANTECEDENTES:Estudios aleatorizados han validado la proctectomía laparoscópica para el tratamiento del cáncer de recto igual a la proctectomía abierta, pero la mayoría de esos estudios han incluido resecciones con preservación del esfínter junto con resección abdominoperineal.OBJETIVO:Comparar los resultados oncológicos perioperatorios y a largo plazo entre la resección abdominoperineal abierta y mínimamente invasiva.DISEÑO:Análisis retrospectivo de una base de datos mantenida de forma prospectiva.ENTORNO CLINICO:Servicio único especializado en cirugía colorrectal.PACIENTES:Todos los pacientes que se sometieron a resección abdominoperineal por cáncer de recto primario entre 2000 y 2016.PRINCIPALES MEDIDAS DE VALORACION:Resultados oncológicos perioperatorios y a largo plazo.RESULTADOS:Se incluyeron 452 pacientes, 372 en el grupo abierto y 80 en el grupo mínimamente invasivo, con una mediana de seguimiento de 74 meses. Hubo diferencias significativas entre los grupos en términos de tratamiento con radiación neoadyuvante (67,5% del grupo abierto versus 81,3% del grupo mínimamente invasivo, p = 0,01), tiempo operatorio (media de 200 minutos versus 287 minutos, p0,0001) y la duración media de la estancia (9,5 días frente a 6,6 días, p0,0001). Las tasas generales de complicaciones fueron similares entre los grupos (34,5% versus 27,5%, p = 0,177). No hubo diferencias significativas en el número medio de ganglios linfáticos extraídos (21,7 versus 22,2 ganglios, p = 0,7), márgenes radiales circunferenciales (1,48 cm y 1,37 cm, p = 0,4), ni en la tasa de márgenes radiales afectados (10,8 cm). % versus 6,3%, p = 0,37). La supervivencia general a 5 años fue del 70% en el grupo abierto frente al 80% en el grupo mínimamente invasivo (p = 0,344), mientras que la tasa de supervivencia libre de enfermedad a 5 años en el grupo abierto fue del 63,2% frente al 77,6% en el grupo mínimamente invasivo (p = 0,09).LIMITACIONES:Experiencia en una institución de referencia única.CONCLUSIONES:Si bien ambos tienen resultados perioperatorios similares, el enfoque mínimamente invasivo, beneficia a los pacientes con estadía más corta y menor riesgo de infecciones de la herida quirúrgica. Ambos enfoques, producen una calidad técnica oncológica similar en términos de ganglios linfáticos extraídos y estado de los márgenes, y tienen resultados oncológicos comparables a largo plazo. Consulte Video Resumen en http://links.lww.com/DCR/B754. (Traducción - Dr. Fidel Ruiz Healy).

BACKGROUND OR PURPOSE Enteric Crohn's disease (CD) is characterized by transmural inflammation resulting in inflammatory, stricturing, or penetrating phenotypes. However, data regarding the relationship between stricturing and penetrating behavior is lacking. The incidence of penetrating CD in the absence of a stricture is unclear. The aim of this study is to assess if enteric fistulae in adult patients undergoing abdominal surgery for symptomatic CD occur in isolation. METHODS Resection or repair of enteric CD fistulae performed in a quaternary care referral center (2009-2017) was analyzed. Fistulae associated with pelvic or continent pouch, rectal stump, or ano-vagina were excluded. Fistulae were stratified based on origin, tract, target, and relationship to stricture. Strictures were stratified as inflammatory or fibrostenotic. RESULTS Five hundred consecutive operative reports were reviewed. A total of 490 fistulae were evaluated. Two hundred ninety-nine fistulae were in patients undergoing index surgery. Incidence of CD fistulae not associated with stricture was 14.9% in total, but only 8% in the index surgery cohort. The majority of fistulae originated from the ileum (95%). CD fistulae originating from the stomach or duodenum were not identified in the index cohort. Fistulae within an inflammatory stricture were likely to include an intra-abdominal abscess (p < 0.001). Fistulae associated with a fibrostenotic stricture were more likely to originate proximal to the stricture (p < 0.001). The incidence of fistula-associated adenocarcinoma was 0.6%. CONCLUSIONS Symptomatic CD fistulae in the absence of stricture are uncommon. Caution should be exercised when making a diagnosis of CD in the presence of enteric fistulae, but an absence of stricture, particularly in patients with prior abdominal surgery.

Desmoid disease is a leading cause of morbidity and mortality in patients with familial adenomatous polyposis. Abdominal desmoid disease usually follows total proctocolectomy with IPAA or total abdominal colectomy with ileorectal anastomosis. Sex, extraintestinal manifestations, and a 3'-mutation location have been identified as risk factors, but surgical risk factors are poorly understood. We hypothesized that pouch construction creates a higher risk of desmoid formation due to the increased stretch of the small-bowel mesentery.This study aimed to investigate the surgical risk factors for desmoid formation.This was a retrospective, single-center, registry-based cohort study.This study was conducted at a single academic institution with a prospectively maintained hereditary colorectal cancer database between 1995 and 2015.All patients with familial polyposis (total 345) who underwent either proctocolectomy with a pouch or colectomy with an ileorectal anastomosis during the study period and met inclusion criteria were selected.The development of symptomatic abdominal desmoid disease was the primary end point. Associations between desmoid formation and resection type, surgical approach, and other patient factors were analyzed.A total of 172 (49%) patients underwent proctocolectomy/ileoanal pouch, whereas 173 (51%) underwent total colectomy/ileorectal anastomosis. Overall, 100 (28.9%) developed symptomatic desmoids after surgery. On univariable analysis, open surgery and pouch surgery were associated with desmoid development, along with extracolonic manifestations, family history of desmoids, mutation location, and a high desmoid risk score. On multivarible analysis, proctocolectomy with pouch was most strongly associated with desmoid disease ( p0.01).This study was limited by its retrospective nature, the lack of uniform desmoid screening, and the variable duration of follow-up. Unanalyzed confounding factors include polyposis severity and number of surgeries.Patients with polyposis who underwent total proctocolectomy with pouch by any approach had significantly greater risk of developing desmoid disease than total colectomy with ileorectal anastomosis, even when accounting for other risk factors. See Video Abstract at http://links.lww.com/DCR/B822 .RESULTADOS DE LOS PACIENTES SOMETIDOS A RESECCIÓN INTESTINAL ELECTIVA ANTES Y DESPUÉS DE LA IMPLEMENTACIÓN DE UN PROGRAMA DE DETECCIÓN Y TRATAMIENTO DE ANEMIA.Se sabe que los pacientes anémicos que se someten a una cirugía electiva de cáncer colorrectal tienen tasas significativamente más altas de complicaciones posoperatorias y peores resultados.Mejorar las tasas de detección y tratamiento de la anemia en pacientes sometidos a resecciones electivas de colon y recto a través de una iniciativa de mejora de calidad.Comparamos una cohorte histórica de pacientes antes de la implementación de nuestro programa de detección de anemia y mejora de la calidad del tratamiento con una cohorte prospectiva después de la implementación.Hospital de atención terciaria.Todos los pacientes adultos con un nuevo diagnóstico de cáncer de colon o recto sin evidencia de enfermedad metastásica entre 2017 y 2019.Detección de anemia y programa de mejora de la calidad del tratamiento.El resultado primario fue el costo hospitalario por ingreso.Un total de 84 pacientes se sometieron a resección electiva de colon o recto antes de la implementación de nuestro proyecto de mejora de calidad de la anemia y 88 pacientes se sometieron a cirugía después. En la cohorte previa a la implementación, 44/84 (55,9 %) presentaban anemia en comparación con 47/99 (54,7 %) en la cohorte posterior a la implementación. Las tasas de detección (25 % a 86,4 %) y tratamiento (27,8 % a 63,8 %) aumentaron significativamente en la cohorte posterior a la implementación. El costo total medio por admisión se redujo significativamente en la cohorte posterior a la implementación (costo medio $16 827 vs. $25 796, p = 0,004); esta reducción significativa se observó incluso después de ajustar los factores de confusión relevantes (proporción de medias: 0,74, IC del 95 %: 0,65 a 0,85). El vínculo mecánico entre el tratamiento de la anemia y la reducción de costos sigue siendo desconocido. No hubo diferencias significativas en las tasas de transfusión de sangre, complicaciones o mortalidad entre los grupos.El diseño de antes y después está sujeto a sesgos temporales y de selección.Demostramos la implementación exitosa de un programa de detección y tratamiento de anemia. Este programa se asoció con un costo por admisión significativamente reducido. Este trabajo demuestra el valor y los beneficios posibles de la implementación de un programa de detección y tratamiento de la anemia. Consulte Video Resumen en http://links.lww.com/DCR/C15 . (Traducción- Dr. Francisco M. Abarca-Rendon ).

Ileocolic resection for Crohn's disease traditionally does not include a high ligation of the ileocolic pedicle, and most commonly is performed with a stapled side-to-side ileocolic anastomosis. The mesentery has recently been implicated in the pathophysiology of Crohn's disease. Two techniques have been developed and are associated with reduced postoperative recurrence: the Kono-S anastomosis that excludes diseased mesentery and extended mesenteric excision that resects diseased mesentery. We aimed to assess the technical feasibility and safety of a novel combination of techniques: mesenteric excision and exclusion.This initial report is a single-center descriptive study of consecutive adults who underwent mesenteric excision and exclusion for primary or recurrent ileocolic Crohn's disease from September 2020 to June 2021. Medication exposure and endoscopic balloon dilation before surgery were recorded. Phenotype was classified using the Montreal Classification. Thirty-day outcomes were reported. A video of the mesenteric excision and exclusion including the Kono-S anastomosis is presented.Twenty-two patients with ileocolic Crohn's disease underwent mesenteric excision and exclusion: 100% had strictures, 59% had fistulas, 81% were on biologics, and 27% had previous ileocolic resection(s). Seventy-two percent underwent laparoscopic procedures, a mesenteric defect was closed in 86%, omental flaps were fashioned in 77%, and 3 patients were diverted. Median operative time was 175 minutes. Median postoperative stay was 4 days. At 30 days, there were 2 readmissions for reintervention: 1 seton placement and 1 percutaneous drainage of a sterile collection. There were no cases of intra-abdominal sepsis or anastomotic leak.Mesenteric excision and exclusion represents an innovative, progressive, and promising approach that appears to be highly feasible and safe. Further study is warranted to determine if mesenteric excision and exclusion is associated with reduced postoperative recurrence of ileocolic Crohn's disease.

Aim In patients with anorectal Crohn's disease, it remains uncertain whether a total proctocolectomy with end ileostomy or proctectomy with end colostomy should be recommended due to the unknown rate of disease recurrence in the remaining colon. Methods A retrospective review of all patients with a known diagnosis of Crohn's disease who underwent a proctectomy with end colostomy for distal Crohn's disease between January 1, 2010 and January 1, 2019 at two IBD referral centres was conducted. Data collected included patient demographics, surgical variables at the time of proctectomy, and postoperative clinical, endoscopic and surgical recurrence rates. Results A total of 63 patients were included; mean age was 47 years (SD 15 years) and 32 (50.8%) were female. The majority of patients underwent a proctectomy with end colostomy (n = 56; 88.9%) while the remaining seven patients (11.1%) underwent a proctectomy with end colostomy and concurrent ileocectomy. A total of 55 patients (87.3%) had proctitis, 51 (81%) had perianal fistulating disease, and 34 (54%) had anal canal stenosis or ulceration. Most patients had medically refractory disease (n = 54; 85.7%) versus neoplasia (n = 9; 14.3%). The median length of long-term follow-up was 17.7 months (IQR: 4.72, 38.7 months). During that time, 14 (22.2%) experienced clinical recurrence, 10 of 34 evaluated (29.4%) had endoscopic recurrence, and 3 (4.76%) required a completion total abdominal colectomy for recurrent medically refractory disease in the colon. Conclusion Colonic recurrence remains low following proctectomy and descending colostomy suggesting this operative management strategy is reasonable in Crohn's patients with distal disease.

Aim Despite good overall outcomes in most patients undergoing ileal pouch-anal anastomosis (IPAA), there is still hesitation about performing an IPAA in older patients due to the comorbidity burden and concern about incontinence. The aim of this work was to identify short- and long-term outcomes in older patinets undergoing IPAA to determine the perioperative safety and long-term functional success of IPAA in older patients. Method A literature search was performed for all publications on IPAA in adults aged ≥50 years that reported short- and long-term outcomes. Data extraction included demographics, 30-day outcomes, long-term functional outcomes and pouch failure. Data were further separated by age group (50-65 and ≥65 years). Outcomes were compared between age groups. Study quality and risk of bias was assessed using the Newcastle-Ottawa Scale. Results Of 1053 publications reviewed, 13 full papers were included in the analysis. The overall 30-day morbidity and mortality rates were 47.3% and 1.3%, respectively. Thirty-day postoperative rates of small bowel obstruction and pelvic sepsis were 7.6% and 9.9%, respectively. After a median follow-up time of 62 months, rates of pouchitis, incontinence and pouch failure were 13.9%, 17.5% and 7.5%, respectively. There was no statically significant difference in rates of short- or long-term functional outcomes based on age 50-65 versus ≥65 years. Conclusion Increasing age did not increase the rate of short- or long-term outcomes, including pouch failure. These data suggest that the decision for IPAA construction should not be based on age alone.

Background: There currently is no standard practice for optimal urinary catheter removal after rectal resection (proctectomy). Delayed removal may increase urinary tract infection risk, an importan...

While neoadjuvant chemoradiation therapy (nCRT) is accepted as standard of care for locally advanced rectal cancer, the approach to treatment of patients with clinically staged T3N0 disease has been increasingly debated. This study examines the accuracy of clinical staging for cT3N0 rectal cancer as recorded in the National Cancer Data Base and evaluates the role of nCRT in treating these patients.Total of 15,843 patients with clinically staged T3N0M0 rectal cancer who either received nCRT or proceeded to surgery-first met inclusion criteria. Propensity score matching was employed to balance the groups.23% of cT3N0 patients undergoing surgery-first were found to have pathologically positive nodes. Another 16% turned out to have stage II disease on surgical pathology. Survival curves for matched nCRT and surgery-first groups demonstrated a survival advantage for cT3N0 patients treated with nCRT.Poor clinical staging accuracy can result in both undertreatment and overtreatment of cT3N0 rectal cancer.

BACKGROUND Despite common beliefs, underuse of laparoscopic colorectal surgery remains an issue. A paradigm shift to increase laparoscopy and align payment with effort is needed, with pressures to improve value. OBJECTIVE The purpose of this study was to compare reimbursement across surgical approach and payer for common colorectal procedures and to propose a novel way to increase use in the United States. DATA SOURCES Centers for Medicare & Medicaid Services (Medicare) reimbursement and commercial claims data from 2012 to 2015 were used. STUDY SELECTION Reimbursement across payers was mapped for the 10 most common colorectal procedures using the open and laparoscopic approaches. MAIN OUTCOME MEASURES The reimbursement difference across approaches by payer and potential value proposition from a cost-shifting model increasing reimbursement with corresponding increases in laparoscopic use was measured. RESULTS For Medicare, reimbursement was lower laparoscopically than open for the majority. With commercial, laparoscopy was reimbursed less for 3 procedures. When laparoscopic reimbursement was higher, the amount was not substantial. Medicare payments were consistently lower than commercial, with corresponding lower reimbursement for laparoscopy. Increasing reimbursement by 10%, 20%, and 30% resulted in significant cost savings with laparoscopy. Savings were amplified with increasing use, with additional savings over baseline at all levels, except 30% reimbursement/10% increased use. LIMITATIONS The study was limited by the use of claims data, which could have coding errors and confounding in the case mix across approaches. CONCLUSIONS Reimbursement for laparoscopic colorectal surgery is comparatively lower than open. Reimbursement can be increased with significant overall cost savings, as the reimbursement/case is still less than total cost savings with laparoscopy compared with open cases. Incentivizing surgeons toward laparoscopy could drive use and improve outcomes, cost, and quality as we shift to value-based payment. See Video Abstract at http://links.lww.com/DCR/B290. CAMBIOS EN LOS PARADIGMAS DE REEMBOLSOS MEDICOS: UN MODELO PARA ALINEAR EL REEMBOLSO AL VALOR REAL DE LA CIRUGIA COLORRECTAL LAPAROSCOPICA EN LOS ESTADOS UNIDOS: A pesar de las creencias comunes, la subutilizacion de la cirugia colorrectal laparoscopica sigue siendo un problema. Se necesita un cambio en los paradigmas para aumentar y alinear el rembolso de la laparoscopia aplicando mucho esfuerzo para obtener una mejoria en su valor real.Comparar los reembolsos del abordaje quirurgico y los de la administracion para procedimientos colorrectales comunes y proponer una nueva forma de aumentar su uso en los Estados Unidos.Reembolsos en los Centros de Servicios de Medicare y Medicaid (Medicare) y los datos de reclamos comerciales encontrados de 2012-2015.El reembolso administrativo se mapeo para los diez procedimientos colorrectales mas comunes utilizando los enfoques abiertos y laparoscopicos.Diferencias de reembolso entre los enfoques por parte de la administracion y la propuesta de valor real de un modelo de cambio de costos que aumentan el reembolso con los aumentos correspondientes si se utiliza la laparoscopia.Para Medicare, el reembolso fue menor para una mayoria por via laparoscopica que abierta. Comercialmente, la laparoscopia se reembolso menos por 3 procedimientos. Cuando el reembolso laparoscopico fue mayor, la cantidad no fue sustancial. Los pagos de Medicare fueron consistentemente mas bajos que los pagos comerciales, con el correspondiente reembolso mas bajo por laparoscopia. El aumento del reembolso en un 10%, 20% y 30% resulto en ahorros de costos significativos con la laparoscopia. Los ahorros se amplificaron con el aumento de la utilizacion, con ahorros adicionales sobre la linea de base en todos los niveles, excepto el 30% de reembolso / 10% de mayor uso.Uso de datos de reclamos, que podrian tener errores de codificacion y confusion en la combinacion de casos entre enfoques.El reembolso por la cirugia colorrectal laparoscopica es comparativamente mas bajo que el abordaje abierto. El reembolso se puede aumentar con ahorros significativos en los costos generales, ya que el reembolso / caso es aun menor que el ahorro total en los costos de la laparoscopia en comparacion con los casos abiertos. Incentivar a los cirujanos hacia la laparoscopia podria impulsar la utilizacion y mejorar los resultados, el costo y la calidad a medida que se pasa al pago basado en el valor real. Consulte Video Resumen en http://links.lww.com/DCR/B290. (Traduccion-Dr Xavier Delgadillo).

Current guidelines recommend considering adjuvant chemotherapy (AC) for stage II colon cancer (CC) with poor prognostic clinicopathologic and molecular features. However, the relative impact of individual or constellations of high-risk features remains undefined. We developed an individualized point-of-care tool to predict survival benefit attained from the addition of AC. The National Cancer Database was queried for all patients with resected stage II CC from 2004 to 2015. A prognostic risk score and nomogram were constructed using twelve clinicopathologic and molecular prognostic factors associated with outcomes for CC. Overall survival (OS) was compared between surgery alone and AC groups. The nomogram was validated for discrimination and calibration using bootstrap-adjusted Harrell’s concordance index (C-index). For population-level estimation, OS was compared based on quartiles. Of 132,666 patients with stage II CC, 16.8% received AC. The calibration curve of the constructed nomogram showed a good agreement between predicted and observed median and 3-, 5-, and 10-year survival (bootstrap-adjusted C-index 0.699, CI: 0.698–0.703). Population-level risk score analysis (median [Q1, Q3]; 4.9 [4.6, 5.5]) demonstrated that patients with scores > 3.34 had significantly decreased risk of death with the addition of AC (all p

Background Modified frailty index (mFI) has been proposed as a reliable tool in predicting postoperative outcomes after surgery. This study aims to evaluate whether mFI could be utilized to predict readmissions after colorectal resection for patients with cancer by using nationwide cohort. Methods Patients undergoing elective abdominal colorectal resection for colorectal cancer were reviewed from the American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) procedure-targeted database (2010–2012). A previously described mFI was calculated. Demographics, comorbidities, and 30-day postoperative complications were compared between patients who were readmitted or not after colorectal surgery. Results A total of 7337 patients were identified with a mean age of 65.8(±13.6) years. Eight hundred seventy-one (11.8%) patients were readmitted at least once within 30 days. Age, gender, BMI, and other comorbidities were comparable between the groups. O approach, current smoking, mFI(>3/11), disseminating cancer, bleeding disorder and longer operative time were found to independently associated with readmission. Conclusions An 11-point modified frailty index as measured in NSQIP correlates with readmissions after colorectal resection in patients with colon and rectal cancer.

Laparoscopic sigmoidectomy is the preferred approach in the elective surgical management of diverticulitis. However, it is unclear if the benefits of laparoscopy persist when operative times are prolonged. We aimed to investigate if the recovery benefits associated with laparoscopy are retained when operative times are long. A retrospective review of a prospectively maintained database of patients who underwent elective laparoscopic sigmoidectomy from 2010–2015 at a single academic tertiary institution was performed. Operative times among laparoscopic completed cases were divided into quartiles, and patient outcomes were compared between the groups. A total of 466 patients (median age: 58 ± 11.6 years, 58% females) underwent sigmoidectomy: 430 completed laparoscopically and 36 (7.7%) converted. Median operative time in laparoscopically completed cases was 188 min (IQR 154–230). There were no differences in morbidity (P = 0.52) or readmission rates (P = 0.22) among the quartiles. The 2nd and 4th operative time quartiles were associated with significantly longer length of stay (LOS) when compared to the fastest quartile (P = 0.003 and P = 0.002, respectively), but there was no increase in LOS as operative times progressed between the 2nd, 3rd, and 4th quartiles. LOS after conversion was longer but did not reach statistical significance when compared to laparoscopically completed operations in the longest quartile (5.0 vs 6.5 days, P = 0.075) Our data do not support preemptive conversion of laparoscopic sigmoidectomy to avoid prolonged operative times. As long as progress is safely being made, surgeons are justified to continue pursuing laparoscopic completion.

Recent single-institution studies have shown that colorectal cancer (CRC) in patients 70 having a left-sided CRC (< 50 vs ≥ 70; OR = 2.8; 95% CI 2.7, 2.9). The incidence of CRC in those under 50 increased over the study period due to an increase in left-sided tumors. The distribution of CRC varied with race, with African-Americans having a lower odds for left-sided CRC (OR = 0.89; 95% CI 0.87, 0.91) and Asians/Pacific Islanders having a higher odds (OR = 1.8; 95% CI 1.7, 1.9). In the < 50 age group, the incidence of CRC is increasing, with majority of these tumors left-sided. Tumor location varies with both age and race.

Background Neoadjuvant chemoradiotherapy (nCRT) has become the standard of care for locally advanced rectal cancer, decreasing locoregional recurrence, yet with an unclear survival advantage. We aimed to assess the benefit of nCRT on oncologic and perioperative outcomes of patients with clinical stage IIA rectal adenocarcinoma treated with abdominoperineal resection (APR). Methods Patients with clinical T3N0 rectal adenocarcinoma that underwent APR between 1995 and 2014 were included. Patients who received nCRT were compared with patients who did not. Multivariate analysis was conducted to compare oncological and perioperative outcomes between the groups. Results 127 patients were included, of which 94 received nCRT. Median follow-up was 11.9 years. There was no difference in circumferential margins, postoperative morbidity, and complication rates between the groups. There was no difference in 5-year oncological outcomes between the groups. Conclusions No difference was found in 5-year oncological outcomes between patients with clinical T3N0 rectal adenocarcinoma necessitating an APR who received nCRT and those not receiving nCRT, with similar overall complication rates.

Background Locoregional colon cancer recurrence occurs in around 10% of patients following initial curative intent primary resection. We hypothesized oncological results can vary based on the recurrence site. Our aim was to determine outcomes for patients undergoing resection with curative intent for locally recurrent colon cancer. Methods Patients with locoregional recurrence after curative intent resection for colon cancer were identified (1999–2017). Demographics, operative details and outcome data were recorded. Kaplan-Meier method was used to compare survival differences. Results Fifty-two patients (mean age, 62) were included. The most common recurrence site was primary anastomosis (48%). R0 resection was obtained in 68%. Major morbidity occurred in 37%. Patients with anastomotic recurrence had a statistically significant overall survival compared to other sites (71.6 vs. 40.8 months respectively with a P value of 0.05). Conclusions Excellent outcomes are possible for curative intent recurrent colon cancer surgery. The site of loco-regional recurrence plays a significant role in outcomes. Table of Contents Summary: Colon cancer recurrence can be treated surgically with optimal outcomes. Anastomotic recurrence is associated with improved survival.

AIM Excisional haemorrhoidectomy in patients with ulcerative colitis (UC), especially those undergoing an ileal pouch-anal anastomosis (IPAA), remains controversial. The aim of our study was to determine the safety of excisional haemorrhoidectomy in UC patients with and without an IPAA. METHOD A retrospective review of all adult UC patients undergoing excisional haemorrhoidectomy between 1 January 1995 and 1 January 2019 at a tertiary inflammatory bowel disease referral centre was performed. Data collected included patient demographics, clinical characteristics of UC, prior surgical intervention for UC (colectomy, IPAA) and complications after haemorrhoidectomy. RESULTS Forty-one adult patients [50% male; median age 52 (range 25-79) years] with UC underwent excisional haemorrhoidectomy between 1 January 1995 and 1 January 2019. The majority (n = 23) had not previously undergone surgery for UC. However, eight had already undergone construction of an IPAA at the time of haemorrhoidectomy, seven had IPAA at the time of haemorrhoidectomy and three had an IPAA constructed subsequent to haemorrhoidectomy. Two (4.9%) patients need to go back to theatre for postoperative bleeding. There were no further 30-day complications or long-term nonhealing of the surgical site. There were no pouch complications in those who had haemorrhoidectomy at the time of IPAA construction or in the presence of an IPAA. CONCLUSION Our data suggest that excisional haemorrhoidectomy may be performed safely in carefully selected UC patients with symptomatic haemorrhoids with or without IPAA and even at the time of IPAA construction.

Gastrectomy and gastric bypass improve type 2 diabetes (T2DM), potentially through alterations in intestinal hormones and the microbiome. The aim of this study was to analyze whether colorectal resections result in improvement of T2DM. A total of 171 patients with T2DM who underwent colectomy for benign diseases were studied with a median postoperative follow-up of 3 years (interquartile range [IQR] 1–5). The median BMI and glycated hemoglobin (HbA1c) at baseline and post-colectomy were 30.3 kg/m2 (IQR 26.6–34.6) versus 30.4 kg/m2 (IQR 26.2–35) (p = 0.1), and 6.7% (IQR 6.2–7.5) versus 6.5% (IQR 6.5–7.1) (p = 0.5), respectively. The proportion of patients taking diabetes medications at baseline versus post-colectomy did not differ significantly. Changes in BMI, HbA1c, and status of diabetes medications were not statistically different between the subtypes of colorectal resection. Our experience suggests that colectomy for benign colorectal diseases is not associated with long-term changes in body weight or glycemic control.

Background Almost a decade after international guidelines defining anastomotic leak (AL) were published, the definition of AL remains inconsistent. Methods A 3-round modified Delphi study was conducted among a national panel of 8 surgeon experts to assess consensus related to the definition of AL following colorectal resection. Consensus was defined when a scenario was rated as very important or absolutely essential by at least 85% of the experts in round 3. Results Seven of fifteen (47%) clinical and radiological scenarios of AL achieved consensus. 80% of clinical scenarios reached consensus. 30% of radiological scenarios reached consensus including CT demonstrating air bubbles around the anastomosis. No consensus was achieved in 70% of radiological scenarios. Conclusions Consensus on the definition of AL is difficult to reach, in relation to international guidelines; which implies that further refinement of the definition of AL is needed to compare patient outcomes.

Background Recommendations regarding management of colorectal dysplasia in the setting of IBD continue to evolve. Objective This study aimed to determine the rate of progression from dysplasia to adenocarcinoma, specifically focusing on the differences in unifocal and multifocal low-grade dysplasia and dysplasia found on random biopsy versus targeted biopsies. Design This is a retrospective review. Setting This study was conducted at an IBD referral center. Patients All adult patients (≥18 years of age) with a known diagnosis of either ulcerative colitis or Crohn's disease, who underwent a surveillance colonoscopy between January 1, 2010 and January 1, 2019, were selected. Main outcomes measures The primary outcomes measured were the progression of dysplasia and the risk factors for progression. Results A total of 23,751 surveillance colonoscopies were performed among 12,289 patients between January 1, 2010 and January 1, 2019. The mean age at colonoscopy was 52.1 years (SD 16.9 years), 307 patients (2.5%) had a history of primary sclerosing cholangitis, and 3887 (3.15%) had a family history of colorectal cancer. There was a total of 668 patients (5.4%) with low-grade dysplasia, 76 patients (0.62%) with high-grade dysplasia, and 68 patients (0.55%) with adenocarcinoma in the series. The 1-, 2-, and 5-year cumulative incidence rate of progressing from low-grade dysplasia to high-grade dysplasia were 1.6%, 4.8%, and 7.8%. The 1- and 2-year cumulative incidence rates of progressing from low-grade dysplasia to adenocarcinoma were 0.7% and 1.6%. There were no significant differences in unifocal and multifocal progression. Primary sclerosing cholangitis, ulcerative colitis, male sex, and advanced age were all found to be significant risk factors for neoplasia on multivariable analysis. Limitations A retrospective database was a source of information. Conclusion Progression of low-grade dysplasia to adenocarcinoma, regardless of its being unifocal or multifocal, remains very low in the setting of adequate surveillance and medical management. The presence of multifocal low-grade dysplasia should not change the decision making to pursue ongoing endoscopic surveillance versus proctocolectomy. Patients who had primary sclerosing cholangitis with dysplasia found on random biopsies may be at highest risk for dysplasia progression. See Video Abstract at http://links.lww.com/DCR/A649. El desenlace de la displasia de bajo grado unifocal versus multifocal durante la colonoscopia en pacientes con enfermedad inflamatoria intestinal ANTECEDENTES:Las recomendaciones para el tratamiento de la displasia colorrectal en el contexto de la enfermedad inflamatoria intestinal siguen evolucionando.OBJETIVO:Determinar la tasa de progresion de displasia a adenocarcinoma, centrandose especificamente en las diferencias en displasia de bajo grado unifocal y multifocal, y displasia encontradas en biopsias aleatorias versus biopsias dirigidas.DISENO:Revision retrospectiva.AMBITO:Centro de referencia de EII.PACIENTES:Todos los pacientes adultos (> 18 anos) con un diagnostico comprobado de colitis ulcerosa o enfermedad de Crohn que se sometieron a una colonoscopia de vigilancia entre el 1 de enero de 2010 y el 1 de enero de 2019.PRINCIPALES VARIABLES ANALIZADAS:Progresion de la displasia y factores de riesgo de progresion.RESULTADOS:Se realizaron un total de 23.751 colonoscopias de vigilancia en 12.289 pacientes entre el 1/1/2010 y el 1/1/2019. La edad media en el momento de la colonoscopia fue de 52,1 anos (DE 16,9 anos), 307 pacientes (2,5%) tenian antecedentes de colangitis esclerosante primaria y 3887 (3,15%) tenian antecedentes familiares de cancer colorrectal. Hubo un total de 668 pacientes (5,4%) con displasia de bajo grado, 76 pacientes (0,62%) con displasia de alto grado y 68 pacientes (0,55%) con adenocarcinoma en la serie. La tasa de incidencia acumulada de 1, 2, 5 anos de progresion de displasia de bajo grado a displasia de alto grado fue del 1,6%, 4,8% y 7,8%. Las tasas de incidencia acumulada de 1 y 2 anos de progresion de displasia de bajo grado a adenocarcinoma fueron 0,7% y 1,6%, respectivamente. No hubo diferencias significativas en la progresion unifocal y multifocal. Se encontro que la colangitis esclerosante primaria, la colitis ulcerosa, el sexo masculino y la edad avanzada eran factores de riesgo significativos de neoplasia en el analisis multivariable.LIMITACIONES:Base de datos retrospectiva.CONCLUSION:La progresion de la displasia de bajo grado a adenocarcinoma, independientemente de que sea unifocal o multifocal, sigue siendo muy baja en el contexto de una vigilancia y un tratamiento medico adecuados. La presencia de displasia multifocal de bajo grado no deberia cambiar la toma de decision para continuar con vigilancia endoscopica continua o realizar la proctocolectomia. Los pacientes con colangitis esclerosante primaria y displasia encontrada en biopsias aleatorias pueden tener una mayor progresion de la displasia. Consulte Video Resumen en http://links.lww.com/DCR/A649.

No long-term pouch studies have included follow-up30 years or an analysis in patients80 years old.This study aimed to investigate pouch function and pouch failure in patients with a pouch in situ30 years and in patients80 years old.This is a retrospective review.This study was conducted at an IBD referral center.Adult patients with ulcerative colitis who underwent an IPAA between 1983 and 1990 were selected.The primary outcomes measured were pouch function and pouch failure rates.Data collection included diagnosis, age at IPAA, indication for IPAA, medications at IPAA, pathology at the time of IPAA, postoperative morbidity, functional outcomes, quality of life, pouch excision or ileostomy and indication, and date of last follow-up. All living patients were contacted in April 2020 to retrieve functional data and pouch failure rates.A total of 566 patients had a pouch constructed between 1983 and 1990; of the 145 at most recent contact, 75 had their pouch in situ ≥30 years and 14 were ≥80 years old. Mean age at diagnosis was 25.8 years (10.6 SD), age at surgery was 34.7 years (11.3 SD), and age at last follow-up was 60.5 years (13.2 SD). At a median of 30 years (IQR, 21-32), 145 patients responded to the functional survey. Significantly increased rates of urgency (always, mostly, sometimes: 71.5% vs 23.5%) and seepage during the day (71.4% vs 22.4%) were observed in patients ≥80 years. In patients ≥80 years with a pouch in situ ≥30 years, urgency and incontinence were sometimes experienced by nearly 50% and pouch failure occurred in one third of patients. The overall rate of pouch failure was 19.4% (n = 110) at a median follow-up of 15 years; risk factors were female sex, 3-stage approach, and pelvic sepsis.A retrospective database was used.Patients with IPAA maintain good pouch function even after 30 years and in patients over the age of 80 years. Pouch function declines with time and failure rates increase over time. See Video Abstract at http://links.lww.com/DCR/B684.Función De La Bolsa Ileal En El Tiempo Y En Pacientes De Edad Avanzada.No se han efectuado estudios en pacientes con bolsa a largo plazo que incluyan un seguimiento por treinta años o más y en pacientes mayores de 80 años.Investigar la funcionalidad o la falla de la bolsa en pacientes bolsa in situ por mas de treinta años y en pacientes mayors de 80 años.Revisión retrospective.Centro de referencia de Enfermedad Inflamatoria Intestinal.Pacientes adultos con diagnóstico de colitis ulcerative sometidos a anastomosis bolsa ileal anal (IPAA) entre 1983 y 1990.Indices de efectividad y disfunción de la bolsa ileal.Recopilación de la información incluyendo diagnóstico, edad del procedimiento (IPAA), indicaciones para IPAA, medicamentos para IPAA, patología en el transcurso del IPAA, morbilidad postoperatoria, resultados funcionales, calidad de vida, excisión de la bolsa o ileostomía y su indicación y fecha de seguimiento mas reciente. Se contactaron a todos los pacientes vivos en abril de 202 para recuperar la información de los índices de funcionalidad o disfunción de la bolsa.Se les construyó una bolsa a un total de 566 pacientes entre 1983 y 1990; de los 145 mas recientemente contactados, 75 permanecían con su bolsa in situ ≥ 30 años y 14 eran mayores de 80 años. La edad media en el momento de diagnóstico fue de 25.8 años (con desviación estándar de 10.6, sd), edad al momento de la cirugía fue de 34.7 años (11.3sd), y la edad en el último seguimiento de 60.5 años (13.2,sd). A una media de 30 años (IQR: 21,32), 145 pacientes respondieron al cuestionario de funcionalidad. En pacientes mayores de 80 años se observaron tasas aumentadas de urgencia (siempre, la mayor parte de las veces, algunas veces: 71.5% vs 23.5%) y fuga durante el día (71.4% versus 22.4%). En pacientes mayores de 80 años con una bolsa in situ durante 30 años o más, experimentaron urgencia e incontinencia en cerca del 50% y disfunción de la bolsa en un tercio de los pacientes. La tasa global de fallo de la bolsa fue de 19.4% (n = 110) en un seguimiento a 15 años; los factores de riesgo asociados fueron: sexo femenino, abordaje de tres tiempos y sepsis pélvica.Información retrospective.Los pacientes con IPAA continúan con una función adecuada de la bolsa aún después de 30 años de efectuada así como en pacientes mayores de 80 años. La funcionalidad de la bolsa disminuye con el tiempo y las tasa de falla aumentan de igual forma con el tiempo. Consulte Video Resumen en http://links.lww.com/DCR/B684. (Traducción- Dr. Miguel Esquivel-Herrera).

Background In this study, we hypothesized that the direct hospital costs of robotic restorative proctectomy (RP) would be similar to those of open RP when a cost-conscious approach was employed in rectal cancer patients. Methods We included consecutive patients with rectal cancer who underwent RP between 12/2011 and 10/2014. A cost-conscious approach was employed in robotic surgery. We compared demographics, long-term oncologic outcomes, and direct hospital costs between the open and robotic groups. Results There were 32 robotic and 68 open RP procedures performed. Compared to open RP, the robotic RP group had a longer operative time but less estimated blood loss, intraoperative transfusions, overall short-term morbidity, decreased length of stay. After the initial five robotic cases, overall hospital costs were comparable between the groups (1±0.5 vs. 1±0.4, open and robotic RP, respectively, p=0.90). Conclusion Increasing surgeon experience and a cost-conscious approach may improve the value of care of robotic RP in patients with rectal cancer. This article is protected by copyright. All rights reserved.

Most preoperative assessment tools to evaluate risk for postoperative complications require multiple data points to be collected and can be logistically burdensome. This study evaluated if umbilical contamination, a simple bedside assessment, correlated with surgical outcomes. A 6-point score to measure umbilical contamination was developed and applied prospectively to patients undergoing colorectal surgery at an academic medical center. There were 200 patients enrolled (mean age 58.1 ± 14.8; 56% female). The mean BMI was 28.6 ± 7.4. Indications for surgery included colon cancer (24%), rectal cancer (18%), diverticulitis (13.5%), and Crohn’s disease (12.5%). Umbilical contamination scores were 0 (23%, cleanest), 1 (26%), 2 (21%), 3 (24%), 4 (6%), and 5 (0%, dirtiest). Umbilical contamination did not correlate with preoperative functional status (p > 0.2). Umbilical contamination correlated with increased length of stay (rho = 0.19, p = 0.007) and postoperative complications (OR 1.3, 1.02–1.7, p = 0.04), but not readmission (p = 0.3) or discharge disposition (p > 0.2). Sterile preparation of the abdomen is an important component of proper surgical technique and umbilical contamination correlates with increased postoperative complications.

Controversial data exists in the current literature in regard to the use of neoadjuvant chemoradiation (nCRT) in patients with clinical T3N0 (cT3N0) rectal cancers, specifically based on location and relation to peritoneal reflection. We aimed to analyze the impact of nCRT on oncologic outcomes among cT3N0 rectal cancers, depending on the tumor height from anal verge (AV). A retrospective analysis of patients with cT3N0 rectal cancers was included from a query of a prospectively maintained rectal cancer database from 1980 to 2016. Patients were divided into 3 groups based on the tumor height: low (1–5 cm from AV), mid (6–10 cm from AV), and upper (11–15 cm from AV). Patients were stratified by use of nCRT. Main outcomes: 5-year overall survival (OS), disease-free survival (DFS), cancer-specific survival (CSS), and local recurrence (LR) using Kaplan-Meier curves. Five hundred ninety-two patients were included. Overall, 364 (61.4%) patients received nCRT and 228 (38.6%) patients did not. There were 251 (43%) patients with low, 302 (51%) with mid, and 39 (7%) with upper rectal cancer. Patients with low and mid rectal cancers received nCRT more frequently than those with upper rectal cancers (68.5% and 61.2% vs 43.6%, p = 0.007). The 5-year OS was 78% and 63%, DFS—88% and 73%, LR—1% and 8% in nCRT followed by resection vs. surgery alone (p

It is unknown if ulcerative colitis (UC) duration has an impact on outcomes of ileal pouch anal anastomosis (IPAA). The aim of the study was to compare the long-term IPAA outcomes based on preoperative UC duration.All patients with pathologically confirmed UC who underwent IPAA were included from a prospectively maintained pouch database (1983-2017).Patient's cohort was stratified according to UC duration:5 years,5-10 years,10-20 years,20 years. UC duration was defined as time interval from date of preoperative diagnosis to colectomy date. The main outcome was Kaplan-Meier pouch survival. Secondary outcomes were pouch function and quality of life.Out of 4502 IPAAs (1983-2016), 2797 patients were included. Treated with biologics versus 12% with UC duration20 years were 41% patients with UC duration5 years. Treated with steroids compared to shortest (34%,p0.001) were 54% patients with the longest disease. A total of 65% of patients with shortest disease had IPAAs performed mostly in 3 stages. Anastomotic separation and pelvic sepsis were more prevalent among shortest compared to longest disease groups. Rates of pouch-targeted fistulas, anastomotic strictures, and pouchitis were highest in longest disease group. Pouch survival was similar between groups. Multivariate analysis did not show a significant association between UC duration and pouch failure [1.05(0.97-1.1), p = 0.23].Longer UC duration was associated with increased odds of pouchitis [1.2(1.1, 1.3), p0.001]. Biologics agents were shown to be protective against pouchitis.Preoperative UC duration does not increase pouch failure risk. Longer preoperative UC duration increases the pouchitis risk. Biologic agents and three-staged IPAA are protective against pouchitis and septic complications in long-term among patients with UC.

Approximately 50% of patients who have undergone IPAA surgery for Ulcerative Colitis (UC) develop at least 1 episode of pouchitis. Patients with pouchitis have a wide range of symptoms, endoscopic and histologic features, disease course, and prognosis. To date, there are no universally accepted diagnostic criteria in terms of endoscopy and histology; though, semi-objective assessments to diagnose pouchitis in patients with ileal pouch- anal anastomosis (IPAA) have been proposed using composite scores such as the Pouchitis Triad, Heidelberg Pouchitis Activity Score and Pouchitis Disease Activity Index (PDAI). In a systematic review that included four randomized trials evaluating five agents for the treatment of acute pouchitis, ciprofloxacin was more effective at inducing remission as compared with metronidazole. Rifaximin was not more effective than placebo, while budesonide enemas and metronidazole were similarly effective for inducing remission of acute pouchitis. Patients with pouchitis relapsing more than three times per year are advised maintenance therapy, and guidelines recommend ciprofloxacin or the probiotic VSL#3. In patients with antibiotic-refractory pouchitis, secondary factors associated with an antibiotic-refractory course should be sought and treated. In this review, we will discuss the prevention and management of pouchitis in Ulcerative Colitis patients.

Background Enhanced recovery pathways (ERPs) have been shown to reduce length of stay (LOS), complications, and costs after colorectal surgery; yet, little data exists regarding patients with inflammatory bowel disease (IBD). We hypothesized that implementation of ERP for IBD patients is associated with shorter LOS and improved economic outcomes. Methods An IRB-approved prospective clinical database was used to identify consecutive patients from 2015 to 2017. Patients were grouped as “pre-ERP” and “post-ERP” based on the date of implementation of a comprehensive ERP. Ileostomy closures, redo pouch operations, and outpatient operations were excluded. The relationship between ERP, LOS, and secondary outcomes was assessed using univariate and multivariate analysis. Results Overall, a total of 671 patients were included: 345 (51.4%) with Crohn’s disease (CD) and 326 (48.6%) with ulcerative colitis (UC). Of these, 425 were pre-ERP (63.4%), and 246 were post-ERP (36.6%). The groups did not differ in terms of age, gender, American Society of Anesthesiologist (ASA) scores, comorbidities, estimated blood loss, or ostomy construction. The post-ERP group had a significantly higher mean body mass index (BMI), more patients with CD, longer operative time, and more minimally invasive surgery (MIS; all P < 0.05). The post-ERP group had a significantly shorter LOS (6 vs 4.5 days, median), whereas mean hospital costs decreased by 15.7%. There was no difference in readmissions or complications. On multivariate analysis, MIS and ERP use were both associated with a shorter LOS. Conclusion Inflammatory bowel disease patients benefit from the use of ERP, demonstrating decreased LOS and costs without an increase in complications and readmissions. Enhanced recovery pathways should be routinely implemented in this often challenging patient population.

Background and Aim The effects of vedolizumab [VEDO] exposure on perioperative outcomes following surgery for inflammatory bowel disease [IBD] remain controversial. The aim of our study was to compare postoperative morbidity of IBD surgery following treatment with VEDO vs other biologics or no biologics. Methods An institutional review board-approved, prospectively collected database was queried to identify all patients undergoing abdominal surgery for IBD between August 2012 and May 2017. The impact of VEDO within 12 weeks preoperatively on postoperative morbidity was initially assessed with univariate and multivariable analyses on all patients. A case-matched analysis was then carried out comparing patients exposed to VEDO vs other biologic agents, based on gender, age ± 5 years, diagnosis, date of surgery ± 2 years, and surgical procedure. Results Out of 980 patients, 141 received VEDO. The majority of patients [59%] underwent surgery involving end or diverting ostomy creation. The initial multivariate analysis conducted on all patients indicated that VEDO use was independently associated with increased overall morbidity [p Conclusions In a study population having a high rate of surgery involving ostomy creation, the exposure to preoperative VEDO was not associated with an increased morbidity rate when compared with other biologics.

Aim Colonic volvulus is a common entity encountered by colorectal surgeons, but there are few reports of national data regarding postoperative outcomes. The aim of this study was to describe the volvulus population, 30-day outcomes following right- and left-sided colectomy and risk factors for postoperative complications. Method The American College of Surgeons National Surgical Quality Improvement Program Database from 2012 to 2015 was utilized to identify patients with the diagnosis of 'volvulus' who underwent right- or left-sided colectomy. Primary outcomes were overall morbidity and mortality. Results A total of 2175 patients were identified (661 right colectomy and 1514 left colectomy). Risk factors for complications following right-sided colectomy included: age, male gender, smoker, systemic inflammatory response syndrome, sepsis, septic shock and American Society of Anesthesiologsts class ≥ 4. Risk factors for complications following left-sided colectomy included: age, male gender, systemic inflammatory response syndrome, sepsis and septic shock. Conclusion Several nonmodifiable risk factors were identified for complications following colectomy for volvulus. These risk factors can be used in patient/family counselling and discharge planning.

Objective The aim of our study was to determine if an enhanced recovery pathway (ERP) can successfully be applied in nonelective colorectal surgery. Background ERPs have been shown to reduce hospital length of stay (LOS), complications, and costs after elective colorectal surgery. Yet, little data exist regarding the benefits of ERPs in patients undergoing nonelective colorectal surgery. We hypothesized that ERP implementation in a nonelective colorectal surgery population is associated with decreased postoperative LOS. Methods A prospectively-maintained database was used to identify consecutive patients undergoing colorectal surgery after emergency room (ER) or hospital transfer admissions over a period from 2 years before until 1 year after implementation of a comprehensive ERP. The primary endpoint was LOS. Secondary endpoints included total LOS [TLOS = postoperative LOS + LOS of readmission(s)], readmission rates, complication rates, 30-day mortality, and hospital costs. Univariate and multivariate analyses were performed to assess the relationship between ERP implementation and LOS. Results We identified 269 pre-ERP and 135 ERP patients fulfilling the inclusion criteria. Admit source (ER 43.4% vs transfers 56.7%), Charlson comorbidity index, American Society of Anesthesiologists (ASA) status, diagnosis (inflammatory bowel disease 45.8%, malignancy 19.6%, benign intestinal obstructions 10.4%, diverticulitis 9.4%, others 10.4%), and blood loss were comparable (P > 0.05) between the cohorts. Pre-ERP patients had a higher number of previous abdominal surgeries, whereas post-ERP patients had more laparoscopy and more compliance with ERP elements. ERP patients had a shorter postoperative LOS [6 (4, 10) vs 7 (5, 12) days; P = 0.0007]. Hospital costs were 13.4% lower (P = 0.004). Postoperative 30-day morbidity, mortality, and readmissions were comparable, although reoperation rate was higher in the ERP group. On multivariate analysis, ERP implementation and laparoscopy were the only modifiable variables independently associated with shorter LOS, whereas longer operative times and higher ASA classification were associated with longer LOS. Conclusions Patients undergoing nonelective colorectal surgery after ER or hospital transfer admission benefit from the use of an ERP, demonstrating decreased LOS and costs without an increase in complications.

Purpose This study aimed to determine one-year outcomes and the impact of various factors on the need for readmission and reoperation following abdominoperineal resection (APR). Method A multivariate logistic regression analysis was conducted to determine predictors of readmission and/or reoperation within one year of APR performed between January-2000 and December-2013. Results 536 patients were analyzed for whom the most common indication for surgery was rectal cancer(86.4%). Within one year of operation, 14.2% (n = 76) of patients have major (grade III/IV of Clavien-Dindo [CD]) and 26.1%(n = 140) of patients have minor complications (grade I/II of CD). Respective major and minor perineal wound complication(PWC) rates were 10.4% and 5.6%.Readmission and reoperation rates within 90 days following discharge were 25% and 8.8%, respectively. While PWC (n = 53,39.2%) and small bowel obstruction(n = 23,17%) were the most common causes of readmission within 90 days,PWC(n = 20,23.3%) and distant metastasis(n = 20,23.3%) were the main causes of long-term readmission(90-day to 1 year). Conclusion Perineal wound complications were the most common cause of readmission and reoperation within one year of APR. Well-coordinated efforts aimed at decreasing the perineal wound morbidity may impact the need for readmission and reoperation.

OBJECTIVE To evaluate the independent prognostic ability of the American Joint Committee on Cancer (AJCC) tumor regression scores within pathologic stage II and III rectal cancers. BACKGROUND Response to neoadjuvant chemoradiation (nCRT) has been debated as a biologic surrogate for tumor biology and prognosis in rectal cancer. AJCC regression scores have been shown to correlate with prognosis. METHODS Patient demographics, tumor characteristics, and AJCC scores (0 = complete response; 1 = isolated tumor cells remaining; 2 = residual cancer outgrown by fibrosis; 3 = extensive residual cancer) were assessed from 545 rectal cancer patients treated by nCRT followed by surgery at a single institution. Patients were classified as responders (score 0-2) or nonresponders (score 3). Survival analyses were performed using Cox proportional hazards models. RESULTS Of 545 cases, 123 and 182 were pathologic stage II and III, respectively. Median follow-up was 4.9 years. AJCC regression scores were not independently prognostic within stage II cancers. However, AJCC scores were strongly associated with prognosis within stage III cancers (nonresponse 5-year overall survival [OS] 27% vs 67%, P < 0.001). Stage III responders (N = 139, 76.4%) had similar outcomes to stage II (5-year OS 67% vs 74%, P = 0.89). Conversely, stage III nonresponders (N = 43, 23.6%) approached stage IV outcomes (5-year OS 27% vs 18%, P = 0.09). On multivariable analysis, nonresponse (hazard ratio 3.2, 95% confidence interval 1.7-6.2), along with positive margin, abdominoperineal resection, and no adjuvant chemotherapy administration were independently associated with worse OS. CONCLUSIONS AJCC response score after nCRT is a novel prognostic factor in pathologic stage III rectal cancer and may guide surveillance and adjuvant therapy decisions.

Background and Aims Patients with Crohn’s disease undergoing ileocolectomy and primary anastomosis are often at increased risk of anastomotic leak. We aimed to determine whether diverting ileostomy was protective against anastomotic leak after ileocolic resection for Crohn’s disease using a large international registry. Methods We analysed the National Surgical Quality Improvement Program Colectomy Module from 2012 to 2016. Multivariable logistic regression analysis and propensity-score matching were used to identify independent risk factors for leak, and to test the hypothesis that diverting ileostomy was protective against anastomotic leakage. Results A total of 4172 [92%] patients underwent primary anastomosis, and 365 [8%] underwent anastomosis plus ileostomy. The leak rates in the two groups were 4.5% and 2.7%, [p = 0.12], respectively. Multivariate analysis indicated ileostomy omission, emergency surgery, smoking, inpatient status, wound classification 3 or 4, weight loss, steroid use, and prolonged operative time were independently associated with leak. Patients with 0–6 risk factors had leak rates of 1.6%, 2.7%, 4.3%, 6.7%, 8.8%, 11.5%, and 14.3% [p ≤ 0.001], respectively. Following propensity-score matching, ileostomy reduced the risk of leak rate by 55% [p = 0.005]. Patients with primary anastomosis who leaked most frequently required reoperation [57.8%], but anastomosis plus ileostomy patients who leaked most frequently were managed by percutaneous drainage [70%], p = 0.04. Conclusions After ileocolic resection for Crohn’s disease, anastomotic leak may be predicted by simple addition of risk factors. We found that diverting ileostomy mitigated against leak, reducing both the leak rate and the likelihood of unplanned reoperations. Faecal diversion should be considered when ≥3 risk factors are present.

The purpose of this study was to determine the impact of the incision used for specimen extraction on wound infection during laparoscopic colorectal surgery.All patients undergoing elective laparoscopic colorectal resection in a single specialized department from 2000 to 2011 were identified from a prospectively maintained institutional database. Specific extraction-sites and other relevant factors associated with wound infection rates were evaluated with univariate and multivariate analyses.2801 patients underwent specimen extraction through infra-umbilical midline (N = 657), RLQ/LLQ (N = 388), stoma site (N = 58), periumbilical midline (N = 629), Pfannenstiel (N = 789) and converted midline (N = 280). The overall wound infection rate was 10% and was highest in converted midline (14.6%) and Pfannenstiel (11.4%) incisions, while the lowest rate was associated with RLQ/LLQ (N = 13, 3.3%). Independent factors associated with wound infection were increased BMI (p 0.001), extraction site location (p = 0.006), surgical procedure (p = 0.020, particularly left-sided colectomy and total proctocolectomy), diagnosis (p 0.001, particularly sigmoid diverticulitis and inflammatory bowel disease), intraabdominal adhesions (p = 0.033) and intrabdominal rather than pelvic procedure (p = 0.005).A RLQ/LLQ extraction site is associated with the most reduced risk of wound infection in laparoscopic colorectal surgery.

The American Society of Colon and Rectal Surgeons (ASCRS) is dedicated to ensuring high-quality patient care by advancing the science, prevention, and management of disorders and diseases of the colon, rectum, and anus. The Clinical Practice Guidelines Committee is composed of Society members who ar

The prognostic association between mesorectal grading and oncological outcome in patients undergoing resection for rectal adenocarcinoma is controversial. The aim of this retrospective chart review was to determine the individual impact of mesorectal grading on rectal cancer outcomes.We compared oncological outcomes in patients with complete, near-complete and incomplete mesorectum who underwent rectal excision with curative intent from 2009 to 2014 for Stage cI-III rectal adenocarcinoma. We also assessed the independent association of mesorectal grading and oncological outcome using multivariate models including other relevant variables.Out of 505 patients (339 men, median age of 60 years), 347 (69%) underwent a restorative procedure. There were 452 (89.5%), 33 (6.5%) and 20 (4%) patients with a complete, near-complete and incomplete mesorectum, respectively. Local recurrence was seen in 2.4% (n = 12) patients after a mean follow-up of 3.1 ± 1.7 years. Unadjusted 3-year Kaplan-Meier analysis by mesorectal grade showed decreased rates of overall, disease-free and cancer-specific survival and increased rates of overall and distant recurrence with a near-complete mesorectum, while local recurrence was increased in cases of an incomplete mesorectum (all P 0.05). On multivariate analyses, a near-complete mesorectum was independently associated with decreased cancer-specific survival (hazard ratio 0.26, 95% CI 0.1-0.7; P = 0.007). There were no associations between mesorectal grading and overall survival, disease-free survival, overall recurrence or distant recurrence (all P 0.05).Mesorectal grading is independently associated with oncological outcome. It provides unique information for optimizing surgical quality in rectal cancer.

The association between preoperative use of monoclonal antibodies in inflammatory bowel disease (IBD) patients and postoperative complications is controversial, especially for the latest approved biologics, ustekinumab and vedolizumab, where data is limited. We hypothesized that ustekinumab-treated patients would have a similar overall postoperative complication rate as vedolizumab-treated patients. The aim of this study was to compare postoperative complications in patients receiving preoperative ustekinumab vs. vedolizumab. We queried our IRB-approved prospective database to identify Crohn’s patients who underwent colorectal surgery and pretreatment with ustekinumab or vedolizumab within 12 weeks of surgery. Ustekinumab-treated patients were matched to vedolizumab-treated patients based on sex, age ± 5 years, date of operation ± 3 years, and type of surgery. Paired univariate analysis and conditional logistic regression of the matched pairs were performed. Our primary outcome was the short-term postoperative complication rate. Secondary outcomes included infectious complications, readmission, reoperation, and length of stay. A total of 103 patients with Crohn’s disease (CD) met the inclusion criteria (mean age 38.7 ± 13.4 years; male 51.2%). Overall, 30 patients received preoperative ustekinumab and 73 vedolizumab. In the univariate analysis, vedolizumab-treated patients had a higher postoperative complication rate (p = 0.009) and ileus rate (p = 0.015). After matching, 26 matched pairs were compared and logistic regression models demonstrated no significant difference in the primary outcome. For our limited experience, the choice of preoperative biologic treatment between ustekinumab and vedolizumab should not be influenced by fear of surgical complications.

Background For cirrhotic patients awaiting liver transplantation, the Model for End-Stage Liver Disease Sodium (MELD-Na) model is extensively studied. Because of the simplicity of the scoring system, there has been interest in applying MELD-Na to predict patient outcomes in the noncirrhotic surgical patient, and MELD-Na has been shown to predict postoperative morbidity and mortality after elective colectomy. Our aim was to identify the utility of MELD-Na to predict anastomotic leak in elective colorectal cases. Methods The American College of Surgeons National Surgical Quality Improvement Program targeted colectomy database was queried (2012-2014) for all elective colorectal procedures in patients without ascites. Leak rates were compared by MELD-Na score using chi-square tests and multivariate logistic regression analysis. Results We identified 44,540 elective colorectal cases (mean age, 60.5 y ± 14.4, mean body mass index 28.8 ± 6.6 kg/m2, 52% female), of which 70% were colon resections and 30% involved partial rectal resections (low anterior resections). Laparoscopic approach accounted for 64.72% while 35.3% were open. The overall complication and mortality rates were 21% and 0.7%, respectively, with a total anastomotic leak rate of 3.4%. Overall, 98% had a preoperative MELD-Na score between 10 and 20. Incremental increases in MELD-Na score (10-14, 15-19, and ≥20) were associated with an increased leak rate, specifically in partial rectal resections (3.9% versus 5.1% versus 10.7% P Conclusions MELD-Na is an independent predictor of anastomotic leak in partial rectal resections. Anastomotic leak risk increases with increasing MELD-Na in elective colorectal resections, as does 30-d mortality and overall complication rate. As MELD-Na score increases to more than 20, restorative partial rectal resection has a 10% rate of anastomotic leak.

BACKGROUND Anal squamous cell carcinoma has rarely been reported in the setting of ulcerative colitis. OBJECTIVE This study aimed to understand the prognosis of anal squamous cell carcinoma in the setting of ulcerative colitis. DESIGN This is a retrospective review. SETTING This study was conducted at a referral center. PATIENTS Adult patients with both ulcerative colitis (556.9/K51.9) and anal squamous cell carcinoma (154.3/C44.520) between January 1, 2000 and August 1, 2019 were included. MAIN OUTCOMES MEASURES The primary outcomes measured are treatment and survival of anal squamous cell carcinoma. RESULTS Of the 13,499 patients with ulcerative colitis treated, 17 adult patients with ulcerative colitis and anal dysplasia and/or anal squamous cell carcinoma were included in the study: 6 had a diagnosis of anal squamous cell carcinoma, 8 had high-grade squamous intraepithelial lesions, and 3 had low-grade squamous intraepithelial lesions. There were 4 men (23%) and a median age of 55 years (range, 32-69) years. At diagnosis, 6 had an IPAA, of which 5 had active pouchitis, 1 had an ileorectal anastomosis with active proctitis, 1 had a Hartmann stump with disuse proctitis, 5 had pancolitis, and 4 had left-sided colitis. Of the 6 with anal squamous cell carcinoma, all received 5-fluorouracil and mitomycin C with external beam radiation therapy. Four patients had an IPAA, all of whom required intestinal diversion or pouch excision because of treatment intolerance. At a median follow-up of 60 months, 3 patients died: one at 0 months (treatment-related myocardial infarction), one at 60 months (metastatic anal squamous cell carcinoma), and one at 129 months (malignant peripheral nerve sheath tumor); the remaining patients had no residual disease. LIMITATIONS This study was limited because of its retrospective nature and small number of patients. CONCLUSION Anal squamous cell carcinoma in the setting of ulcerative colitis is extremely rare. In the setting of IPAA, diversion may be necessary to prevent radiation intolerance. Careful examination of the perianal region should be performed at the time of surveillance endoscopy. See Video Abstract at http://links.lww.com/DCR/B582. CARCINOMA ANAL DE CLULAS ESCAMOSAS EN COLITIS ULCEROSA PUEDE EL POUCH MODIFICAR LOS RESULTADOS DE LOS PROTOCOLOS DE TRATAMIENTO TRADICIONAL ANTECEDENTES:La incidencia de cancer anal de celulas escamosas es muy baja en pacientes con colitis ulcerosa.OBJETIVO:Comprender el pronostico del cancer anal de celulas escamosas en el contexto de la colitis ulcerosa.DISENO:Revision retrospectiva.AJUSTE:Centro de referencia.PACIENTES:Pacientes adultos con colitis ulcerosa (556.9 / K51.9) y cancer anal de celulas escamosas (154.3 / C44.520) entre el 1 de enero de 2000 y el 1 de agosto de 2019.RESULTADOS PRINCIPALES:Tratamiento y sobrevida del cancer anal de celulas escamosas.RESULTADOS:De 13.499 pacientes en tratamiento por colitis ulcerosa, diecisiete presentaron displasia y/o cancer de celulas escamosas: 6 con cancer, 8 con lesiones intraepiteliales escamosas con displasia de alto grado y 3 con displasia de bajo grado.Cuatro son hombres (23 %) con una mediana de 55 anos (rango 32-69). Al realizar el diagnostico 6 tenian pouch, 5 con pouchitis activa; 1 con ileorecto anastomosis con proctitis activa y 1 con operacion de Hartman y munon con colitis por desuso; ademas 5 tenian pancolitis y 4 tenian colitis izquierdaTodos los casos con cancer anal de celulas escamosas (6 pacientes), fueron tratados con 5-FU mas Mitomicina y radioterapia externa. Cuatro pacientes tenian pouch, todos requirieron derivacion intestinal o escision del pouch por intolerancia al tratamiento.En la mediana de seguimiento de 60 meses, tres pacientes fallecieron: uno a los 0 meses (infarto de miocardio relacionado con el tratamiento), uno a los 60 meses (cancer de celulas escamosas metastasico) y uno a los 129 meses (tumor maligno de la vaina del nervio periferico); el resto no presentaba enfermedad residual.LIMITACIONES:Revision retrospectiva, numero pequeno de pacientes.CONCLUSION:El cancer anal de celulas escamosas en el contexto de la colitis ulcerosa es extremadamente raro. En el contexto de IPAA, la derivacion puede ser necesaria para prevenir la intolerancia a la radiacion. Se debe realizar un examen cuidadoso de la region perianal en el momento de la endoscopia de control. Consulte Video Resumen en http://links.lww.com/DCR/B582.

Indocyanine green fluoroscopy has been shown to improve anastomotic leak rates in early phase trials.We hypothesized that the use of fluoroscopy to ensure anastomotic perfusion may decrease anastomotic leak after low anterior resection.We performed a 1:1 randomized controlled parallel study. Recruitment of 450 to 1000 patients was planned over 2 years.This was a multicenter trial.Included patients were those undergoing resection defined as anastomosis within 10 cm of the anal verge.Patients underwent standard evaluation of tissue perfusion versus standard in conjunction with perfusion evaluation using indocyanine green fluoroscopy.Primary outcome was anastomotic leak, with secondary outcomes of perfusion assessment and the rate of postoperative abscess requiring intervention.This study was concluded early because of decreasing accrual rates. A total of 25 centers recruited 347 patients, of whom 178 were randomly assigned to perfusion and 169 to standard. The groups had comparable tumor-specific and patient-specific demographics. Neoadjuvant chemoradiation was performed in 63.5% of perfusion and 65.7% of standard (p0.05). Mean level of anastomosis was 5.2 ± 3.1 cm in perfusion compared with 5.2 ± 3.3 cm in standard (p0.05). Sufficient visualization of perfusion was reported in 95.4% of patients in the perfusion group. Postoperative abscess requiring surgical management was reported in 5.7% of perfusion and 4.2% of standard (p = 0.75). Anastomotic leak was reported in 9.0% of perfusion compared with 9.6% of standard (p = 0.37). On multivariate regression analysis, there was no difference in anastomotic leak rates between perfusion and standard (OR = 0.845 (95% CI, 0.375-1.905); p = 0.34).The predetermined sample size to adequately reduce the risk of type II error was not achieved.Successful visualization of perfusion can be achieved with indocyanine green fluoroscopy. However, no difference in anastomotic leak rates was observed between patients who underwent perfusion assessment versus standard surgical technique. In experienced hands, the addition of routine indocyanine green fluoroscopy to standard practice adds no evident clinical benefit. See Video Abstract at http://links.lww.com/DCR/B560.ANTECEDENTES:Se ha demostrado que la fluoroscopia con verde de indocianina mejora las tasas de fuga anastomótica en ensayos en fases iniciales.OBJETIVO:Nuestra hipótesis es que la utilización de fluoroscopia para asegurar la irrigación anastomótica puede disminuir la fuga anastomótica luego de una resección anterior baja.DISEÑO:Realizamos un estudio paralelo, controlado, aleatorizado 1:1. Se planificó el reclutamiento de 450-1000 pacientes durante 2 años.AMBITO:Multicéntrico.PACIENTES:Pacientes sometidos a resección definida como una anastomosis dentro de los 10cm del margen anal.INTERVENCIÓN:Pacientes que se sometieron a la evaluación estándar de la irrigación tisular contra la estándar en conjunto con la valoración de la irrigación mediante fluoroscopia con verde indocianina.PRINCIPALES VARIABLES EVALUADAS:El principal resultado fue la fuga anastomótica, y los resultados secundarios fueron la evaluación de la perfusión y la tasa de absceso posoperatorio que requirió intervención.RESULTADOS:Este estudio se cerró anticipadamente debido a la disminución de las tasas de acumulación. Un total de 25 centros reclutaron a 347 pacientes, de los cuales 178 fueron, de manera aleatoria, asignados a perfusión y 169 a estándar. Los grupos tenían datos demográficos específicos del tumor y del paciente similares. Recibieron quimio-radioterapia neoadyuvante el 63,5% de la perfusión y el 65,7% del estándar (p0,05). La anastomosis estuvo en un nivel promedio de 5,2 + 3,1 cm en perfusión en comparación con 5,2 + 3,3 cm en estándar (p0,05). Se reportó una visualización suficiente de la perfusión en el 95,4% de los pacientes del grupo de perfusión. El absceso posoperatorio que requirió tratamiento quirúrgico fue de 5,7% de los perfusion y en el 4,2% del estándar (p = 0,75). Se informó fuga anastomótica en el 9,0% de la perfusión en comparación con el 9,6% del estándar (p = 0,37). En el análisis de regresión multivariante, no hubo diferencias en las tasas de fuga anastomótica entre la perfusión y el estándar (OR 0,845; IC del 95% (0,375; 1,905); p = 0,34).LIMITACIONES:No se logró el tamaño de muestra predeterminado para reducir satisfactoriamente el riesgo de error tipo II.CONCLUSIÓN:Se puede obtener una visualización adecuada de la perfusión con ICG-F. Sin embargo, no se observaron diferencias en las tasas de fuga anastomótica entre los pacientes que se sometieron a evaluación de la perfusión versus la técnica quirúrgica estándar. En manos expertas, agregar ICG-F a la rutina de la práctica estándar no agrega ningún beneficio clínico evidente. Consulte Video Resumen en http://links.lww.com/DCR/B560. (Traducción-Dr Juan Antonio Villanueva-Herrero).

BACKGROUND Patients with IBD are at increased risk of venous thromboembolism. OBJECTIVE This study aims to define the economic burden associated with inpatient venous thromboembolism after surgery for IBD that presently remains undefined. DESIGN This study is a retrospective, cross-sectional analysis using the National Inpatient Sample from 2004 to 2014. SETTING Participating hospitals across the United States were sampled. PATIENTS The International Classification of Diseases, 9th Revision codes were used to identify patients with a primary diagnosis of IBD. INTERVENTIONS Major abdominopelvic bowel surgery was performed. MAIN OUTCOME MEASURES The primary outcome measured was the occurrence of inpatient venous thromboembolism. Univariate and multivariable patient- and hospital-level logistic regression models were used to compare patient characteristics, hospital characteristics, and outcomes between venous thromboembolism and non-venous thromboembolism cohorts. Total average direct costs were then compared between cohorts, and the resulting difference was extrapolated to the national population. RESULTS Of 26,080 patients included, inpatient venous thromboembolism was identified in 581 (2.2%). On multivariable analysis, diagnosis of ulcerative colitis, transfer status, length of preoperative hospitalization, and insurance status were independently associated with inpatient venous thromboembolism. Patients with venous thromboembolism were observed to be associated with an increased median length of stay (17.6 vs 6.7 days; p < 0.001) and higher inpatient mortality (5.0% vs 1.1%; OR 4.7, SE 3.2-7.0; p < 0.001). After adjusting for clinically relevant covariates, the additional cost associated with each inpatient venous thromboembolism was $31,551 (95% CI, $29,136-$33,965). LIMITATIONS Our study is limited by the administrative nature of the National Inpatient Sample database, which limits our ability to evaluate the impact of clinical covariates (eg, use of venous thromboembolism chemoprophylaxis, steroid use, and nutrition status). CONCLUSION Inpatient venous thromboembolism in abdominopelvic surgery for IBD is an infrequent, yet costly, morbid complication. Given the magnitude of patient morbidity and economic burden, venous thromboembolism prevention should be a national quality improvement and research priority. See Video Abstract at http://links.lww.com/DCR/B544. DEFINICIN IMPACTO ECONMICO DE LA TROMBOEMBOLIA VENOSA PERIOPERATORIA EN LA ENFERMEDAD INFLAMATORIA INTESTINAL EN LOS ESTADOS UNIDOS ANTECEDENTES:Pacientes con enfermedad inflamatoria intestinal (EII) tienen un mayor riesgo de tromboembolismo venoso (TEV).OBJETIVO:Definir el impacto economico de TEV hospitalaria despues de la cirugia por EII, que en la actualidad permanece indefinida.DISENO:Un analisis transversal retrospectivo utilizando la Muestra Nacional de Pacientes Internos (NIS) de 2004 a 2014.ENTORNO CLINICO:Hospitales participantes muestreados en los Estados Unidos.PACIENTES:Se utilizaron los codigos de la 9a edicion de la Clasificacion Internacional de Enfermedades (ICD-9) para identificar a los pacientes con diagnostico primario de EII.INTERVENCIONES:Cirugia mayor abdominopelvica intestinal.PRINCIPALES MEDIDAS DE VALORACION:Incidencia de TEV en pacientes hospitalizados, utilizando modelos de regresion logistica univariado y multivariable a nivel de pacientes y hospitales para comparar las caracteristicas de los pacientes, las caracteristicas del hospital y los resultados entre las cohortes de TEV y no TEV. Se compararon los costos directos promedio totales entre cohortes y la diferencia resultante extrapolando a la poblacion nacional.RESULTADOS:De 26080 pacientes incluidos, se identifico TEV hospitalario en 581 (2,2%). En analisis multivariable, el diagnostico de colitis ulcerosa, el estado de transferencia (entre centros hospitalarios), la duracion de la hospitalizacion preoperatoria y el nivel de seguro medico se asociaron de forma independiente con la TEV hospitalaria. Se observo que los pacientes con TEV se asociaron con un aumento de la duracion media de la estancia (17,6 versus a 6,7 dias; p