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Providing patients with accurate and organized information about colonoscopy, while reducing anxiety, is critical to the procedure's success. This study evaluated the impact of an immersive 360° virtual reality (VR)-based educational intervention for first-time adult colonoscopy patients regarding anxiety, attitudes, knowledge, compliance with bowel preparation, and bowel cleanliness. A quasi-experimental design with a non-equivalent control group and non-synchronized pretest–post-test clinical trial was conducted with 40 patients in the experimental group and 40 in the control group. The 360° VR intervention included two sessions: precautions before colonoscopy and the colonoscopy process. The control group received education through individual verbal explanations with written materials. The findings indicated that the VR intervention significantly improved patients' colonoscopy-related anxiety, attitudes, adherence to bowel preparation instructions, and bowel cleanliness. Utilizing 360° VR as an educational tool has the potential to enhance the effectiveness of educational programs by providing realistic information and engaging patients. These findings suggest that 360° VR has the capacity to enhance screening rates and clinical outcomes by reducing negative perceptions associated with colonoscopy. Furthermore, the application of this method can extend to diverse diagnostic testing-related nursing situations in clinical settings. [ABSTRACT FROM AUTHOR]

Testicular cancer survivors (TCS) treated with platinum‐based chemotherapy have an increased risk of colorectal cancer (CRC). We determined the yield of colonoscopy in TCS to assess its potential in reducing CRC incidence and mortality. We conducted a colonoscopy screening study among TCS in four Dutch hospitals to assess the yield of colorectal neoplasia. Neoplasia was defined as adenomas, serrated polyps (SPs), advanced adenomas (AAs: ≥10 mm diameter, high‐grade dysplasia or ≥25% villous component), advanced serrated polyps (ASPs: ≥10 mm diameter or dysplasia) or CRC. Advanced neoplasia (AN) was defined as AA, ASP or CRC. Colonoscopy yield was compared to average‐risk American males who underwent screening colonoscopy (n = 24,193) using a propensity score matched analysis, adjusted for age, smoking status, alcohol consumption and body mass index. A total of 137 TCS underwent colonoscopy. Median age was 50 years among TCS (IQR 43–57) vs 55 years (IQR 51–62) among American controls. A total of 126 TCS were matched to 602 controls. The prevalence of AN was higher in TCS than in controls (8.7% vs 1.7%; P =.0002). Nonadvanced adenomas and SPs were detected in 45.2% of TCS vs 5.5% of controls (P <.0001). No lesions were detected in 46.0% of TCS vs 92.9% of controls (P <.0001). TCS treated with platinum‐based chemotherapy have a higher prevalence of neoplasia and AN than matched controls. These results support our hypothesis that platinum‐based chemotherapy increases the risk of colorectal neoplasia in TCS. Cost‐effectiveness studies are warranted to ascertain the threshold of AN prevalence that justifies the recommendation of colonoscopy for TCS. [ABSTRACT FROM AUTHOR]

Providing patients with accurate and organized information about colonoscopy, while reducing anxiety, is critical to the procedure’s success. This study evaluated the impact of an immersive 360° virtual reality (VR)-based educational intervention for first-time adult colonoscopy patients regarding anxiety, attitudes, knowledge, compliance with bowel preparation, and bowel cleanliness. A quasi-experimental design with a non-equivalent control group and non-synchronized pretest–post-test clinical trial was conducted with 40 patients in the experimental group and 40 in the control group. The 360° VR intervention included two sessions: precautions before colonoscopy and the colonoscopy process. The control group received education through individual verbal explanations with written materials. The findings indicated that the VR intervention significantly improved patients’ colonoscopy-related anxiety, attitudes, adherence to bowel preparation instructions, and bowel cleanliness. Utilizing 360° VR as an educational tool has the potential to enhance the effectiveness of educational programs by providing realistic information and engaging patients. These findings suggest that 360° VR has the capacity to enhance screening rates and clinical outcomes by reducing negative perceptions associated with colonoscopy. Furthermore, the application of this method can extend to diverse diagnostic testing-related nursing situations in clinical settings.

Colorectal cancer (CRC) is the second leading cause of cancer death among Latino men in the United States, yet they have low screening rates. This study explored barriers and facilitators of colonoscopy screening among Latino participants in a CRC screening promotion program. Six focus groups were conducted, in Spanish, with 45 Latino men, of which 28 had received and 17 had not received a colonoscopy. Analysis of the discussion transcripts identified barriers to CRC screening, facilitators to CRC screening, and recommendations for health information dissemination. There was consensus among all participants that they had not received adequate information on colonoscopy screening from their health care providers. Unscreened participants wanted more details about the colonoscopy procedure and bowel preparation. Screened men were more knowledgeable than unscreened men about CRC, the colonoscopy procedure, and the benefits of early detection. Participants also expressed their fears, concerns, and perceptions of stigma in relation to colonoscopy screening. They described family and personal testimonials as facilitators to engaging in colorectal cancer screening. Findings underscore the need for ongoing research and educational efforts to address personal and cultural stigma surrounding colonoscopy and CRC, particularly in underserved communities. Study findings also highlight the danger of missing out on opportunities to increase CRC screening when colonoscopy is the primary screening option offered. Additional research is needed to ensure trust in the health care system and to examine the effectiveness of testimonials on CRC screening among Latino men. [ABSTRACT FROM AUTHOR]

Background: The use of an endoscopic position detection unit (UPD) enables better and more objective understanding of the shape and position of the colonoscope. Here, we investigated the reproducibility of the insertion of a colonoscope with UPD. Materials and Methods: Study participants were 122 patients who received a colonoscopy with UPD twice for the purpose of large bowel screening and surveillance. The mean age of participants was 69.7 ± 10.4 years, and the male-to-female ratio was 9.2:1. The colonoscope insertion technique was primarily based on the shaft-holding, shortening insertion method. The cecal intubation time was recorded; the method used for passing through the sigmoid/descending colon junction (SDJ) and the hepatic flexure. Results: The mean cecal intubation time was 990 ± 511 s. The cecal intubation time and the patterns for passing through the SDJ and hepatic flexure were significantly correlated between the first and second colonoscopies. Conclusion: Use of a UPD revealed good reproducibility of colonoscope insertion. This is the first time we have proved that both time and pattern are inserted in much the same way for the first and second times. In patients' conducted UPD combination TCS after the second time, it was suggested that individual tailor-made insertions are possible based on the information from the first time. [ABSTRACT FROM AUTHOR]

BACKGROUND: In Saudi Arabia, colorectal cancer (CRC) is the most common cancer in males and the third most common cancer in females. The current gold standard for colorectal cancer diagnosis is colonoscopy. Several concerns regarding the balance of ordering colonoscopy procedures for patients presenting with signs and symptoms. There are also several concerns regarding over-ordering the procedure when unnecessary. The current study aimed to evaluate the association between colorectal cancer and colonoscopic conditions in Saudi patients. METHODS: A 10-year cross-sectional study was conducted at Alnoor Specialty Hospital, Makkah, over the last ten years. Colonoscopy reports of patients were evaluated to identify the colonoscopy manifestations associated with mass, polyps, and bleeding. RESULTS: The current study evaluated 2158 cases admitted to the hospital for colonoscopic diagnosis. Results indicated that most of the patients were males (55.4%). Additionally, results showed a significant statistical association between tumor and bleeding, polyp, and hemorrhage. Moreover, it highlighted the association between polyps and bleeding, inflammation, and diverticulosis. CONCLUSION: CRC screening in Saudi Arabia is comprehensive; however, there are a few areas for improvement, including standardization of colorectal cancer pathology reporting to improve the health system's quality. Also, the current study identified conditions that are significantly associated with reported colon polyps and tumors, which could aid in stratifying patients selected for screening via colonoscopy. [ABSTRACT FROM AUTHOR]

Cystic Fibrosis (CF) is the commonest inherited genetic disorder in Caucasians due to a mutation in the gene CFTR (Cystic Fibrosis Transmembrane Conductance Regulator), and it should be considered as an Inherited Colorectal Cancer (CRC) Syndrome. In the United States, physicians of CF Foundation established the “Developing Innovative Gastroenterology Speciality Training Program” to increase the research on CF in gastrointestinal and hepatobiliary diseases. The risk to develop a CRC is 5–10 times higher in CF patients than in the general population and even greater in CF patients receiving immunosuppressive therapy due to organ transplantation (30-fold increased risk relative to the general population). Colonoscopy should be considered the best screening for CRC in CF patients. The screening colonoscopy should be started at the age of 40 in CF patients and, if negative, a new colonoscopy should be performed every 5 years and every 3 years if adenomas are detected. For transplanted CF patients, the screening colonoscopy could be started at the age of 35, in transplanted patients at the age of 30 and, if before, at the age of 30. CF transplanted patients, between the age of 35 and 55, must repeat colonoscopy every 3 years. Our review draws attention towards the clinically relevant development of CRC in CF patients, and it may pave the way for further screenings and studies.

Background: Colonoscopy related fear impairs the current gold standard screening of colorectal cancer. Compared to other minimally invasive procedures for cancer screening, colonoscopy-induced anxiety exceeds the procedure through bowel preparation. Immersive virtual reality's (iVR) role in alleviating the complex stress–pain relationship encountered during medical procedures is directly proportional to the rising affordability of state-of-the-art Head-Mounted-Displays (HMDs). Objective: to assess the effect of iVR on patients' colonoscopy-induced anxiety and pain. Materials and methods: A systematic search was conducted in PubMed, Cochrane Central Register of Controlled Trials, Web of Science, Embase and Scopus databases up to January 2022. Clinical trials evaluating anxiety as an outcome were included without language restriction. Results: Four clinical trials were included: three on the patients' intraprocedural anxiety and one on patient education. Intraprocedural iVR interventions for colonoscopy-induced anxiety and pain revealed a similar effect as conventional sedation, while a statistically significant reduction was reported for non-sedated patients. iVR patient education improved the quality of bowel preparation and reduced patient anxiety before colonoscopy. Conclusions: The current research highlights the need to use high-end HMDs and appropriate interactive iVR software content for colonoscopy-induced anxiety. Methodological frameworks regarding the eligibility of participants, double-blinding and randomization of iVR studies can facilitate the development of iVR implementation for anxiety and pain management. [ABSTRACT FROM AUTHOR]

Background: The use of an endoscopic position detection unit (UPD) enables better and more objective understanding of the shape and position of the colonoscope. Here, we investigated the reproducibility of the insertion of a colonoscope with UPD. Materials and Methods: Study participants were 122 patients who received a colonoscopy with UPD twice for the purpose of large bowel screening and surveillance. The mean age of participants was 69.7 ± 10.4 years, and the male-to-female ratio was 9.2:1. The colonoscope insertion technique was primarily based on the shaft-holding, shortening insertion method. The cecal intubation time was recorded; the method used for passing through the sigmoid/descending colon junction (SDJ) and the hepatic flexure. Results: The mean cecal intubation time was 990 ± 511 s. The cecal intubation time and the patterns for passing through the SDJ and hepatic flexure were significantly correlated between the first and second colonoscopies. Conclusion: Use of a UPD revealed good reproducibility of colonoscope insertion. This is the first time we have proved that both time and pattern are inserted in much the same way for the first and second times. In patients’ conducted UPD combination TCS after the second time, it was suggested that individual tailor-made insertions are possible based on the information from the first time.

OBJECTIVES: The present study aims to report the incidence of colorectal cancer patients under 50 years of age and to compare its aggressiveness with colorectal cancer patients over 50 years of age. BACKGROUND: Recently, the incidence of colorectal cancer at younger ages has increased, and colorectal cancers in young people have a more aggressive course due to late screening programs. METHOD: The files of patients who were operated for colorectal cancer were reviewed retrospectively. Information on the patients such as gender, age, BMI, type and duration of symptoms, location of the tumor, TNM staging, pathology results, operative procedure, morbidity and mortality rates were recorded. Admission complaints, symptom onset time, tumor locations, pathological findings and tumor stages were compared between patients under and over the age of 50. RESULTS: The incidence of colorectal cancer under 50 was 21 % (56/267). The age group of 40-49 was found to be the most common age range under the age of 50, with a colorectal cancer rate of 68%. In patients under the age of 50, higher invasion of the tumor to the serosa, low differentiation of the tumor in terms of histological findings in a higher number of patients and higher mucin component of the tumors and higher N2 lymph node involvement ratio and the tumor was located more in the lower rectum were statistically significant when compared to patients over the age of 50 (p=0.026, p=0.018, p=0.002, p=0.042, p=0.006; respectively). CONCLUSION: The incidence of colorectal cancer has increased at younger ages and has a more aggressive course. [ABSTRACT FROM AUTHOR]

In this study, we investigated the relationship between the cecal intubation time (CIT) and the form and method used for passing through the sigmoid/descending colon junction (SDJ) and the hepatic flexure using an endoscopic position detection unit (UPD), with reference to various factors [age, sex, body mass index (BMI), history of abdominal and pelvic surgery, and diverticulum]. A total of 152 patients underwent colonoscopy with UPD. The mean age was 66.9 ± 12.4 years, and the male to female ratio was 3.6:1. The average CIT time was 14.3 ± 8.2 min. Age, number of experienced endoscopies, history of abdominal and pelvic surgery, BMI, and diverticulum were associated with prolonged CIT; SDJ passage pattern was straight: 8.6 ± 5.0, alpha loop: 11.8 ± 5.6, puzzle ring-like loop: 20.2 ± 5.0, reverse alpha loop: 22.4 ± 9.7, and other loop: 24.7 ± 10.5. The hepatic flexure passing method was in the following order: right rotation maneuver: 12.6 ± 6.6, push maneuver: 15.1 ± 5.9, and right rotation with positional change maneuver: 20.5 ± 7.2. In conclusion, colonoscopy with UPD revealed an association between CIT and SDJ passage pattern and hepatic flexure passing method., Competing Interests: No potential conflicts of interest were disclosed., (Copyright © 2024 JCBN.)

Purpose: Screening programs using fecal occult blood testing help reduce mortality from colorectal cancer (CRC). Colonoscopy and colonoscopy combined with fecal occult blood testing are considered alternatives with higher sensitivity than fecal tests; however, to our knowledge, randomized controlled trials (RCTs) providing such evidence have not been reported. Therefore, this study aimed to compare screening using the fecal immunochemical test (FIT) combined with colonoscopy and FIT alone to evaluate the efficacy of colonoscopy screening in reducing CRC mortality. Methods: This multicenter, prospective, randomized, controlled study included average-risk individuals for CRC living in the study areas and aged 40–74 years. The exclusion criteria were history of CRC, hereditary non-polyposis CRC, familial adenomatous polyposis, inflammatory bowel diseases, history of cancer other than CRC within the past 5 years, and not expected to survive from comorbid illness. The intervention group underwent one-time colonoscopy and annual FIT, while the control group underwent annual FIT. The primary endpoint was mortality from CRC, while the secondary endpoints were cumulative incidence of invasive CRC, advanced CRC (invasion into the muscle layer or deeper), invasive cancer and screening sensitivities and specificities of invasive CRC, whole CRC, advanced neoplasia, and prevalence of adverse events. The intervention and control groups comprised 4876 and 4875 participants, respectively. Conclusion: This explanatory RCT evaluated the efficacy of colonoscopy screening by valid statistical inference based on randomization. Data on adverse events from this kind of screening are necessary when considering implementation of future screening programs. Trial registration: UMIN Clinical Trials Registry, number UMIN000001980. [ABSTRACT FROM AUTHOR]

Forecasts indicate that in the next decade cancer will become the most common cause of death in our country. Over 140,000 new cases of malignant neoplasms are reported annually in Poland. Colorectal cancer (CRC) is one of the most frequently detected malignancies: third in men and second in women. The aim of the study was the assessment of colonoscopy screening for early detection of colorectal cancer by elderly screening subjects. The study group consisted of 106 elderly people (aged 66 years and older), and the control group consisted of 100 consecutive people aged 40 to 65 years who reported to the Clinic for colonoscopy screening under PBP. Subjects from the control group expressed much more positive opinion about the usefulness of colonoscopy screening. 99,1% of subjects from this group assessed the examination as “very useful”, while in the study group such an opinion was expressed by 76% of subjects (p

Aims. A prophylaxis program for the early detection of colorectal cancer carried out by our department since the year 2000 has been extended to include people aged 65 and older. The subjects were asked additional questions regarding their dietary habits and possible coexistence of type 2 diabetes, and women were asked about the use of hormone replacement therapy. A physical examination, including measurements of nutritional status, was conducted. The aim of the study was to assess the effect of overweight, obesity, type 2 diabetes and hormone replacement therapy on the incidence of cancers and adenomas detected by colonoscopy screening in people aged 65 and older. Methods. The study method was standard colonoscopy screening conducted in people aged 65 and older, in whom no clinical signs suggesting the presence of colorectal cancer were observed. The subjects examined provided their answers to a number of questions related to coexisting conditions and medicines taken, and women were asked about their use of hormone replacement therapy in the past. Every subject underwent a thorough physical examination that included basic anthropometric measurements. Results. Subjects with obesity, type 2 diabetes, and women who had used hormone replacement therapy had a greater risk of developing colorectal cancer. Conclusions. The increased risk of colorectal cancer in people with obesity and type 2 diabetes, as well as women undergoing hormone replacement therapy, may be associated with insulin-like growth factor 1 (IGF-1). This polypeptide shows a similarity to insulin, is an active compound in the process of carcinogenesis and plays a role in the regulation of cell growth, proliferation, differentiation and apoptosis. Elucidating the molecular mechanism of action of IGF-1 is important for identifying the causes of tumorigenesis and can also be of significance for the future development of effective methods of treating malignancies.

Introduction. Colonoscopy screening for the early detection of colorectal cancer (CRC), despite many limitations, is widely used in the prevention of this most common digestive tract malignancy due to some important advantages. CRC is a nutrition-dependent disease. It is estimated that implementing rational nutrition as part of health promotion activities during childhood and continuing it in the adult life could reduce the morbidity and mortality of colon and rectal cancer. The aim of the study was to assess the effect of dietary habits on the incidence of colorectal adenomas and cancers in the population aged 65+ subjected to colonoscopy screening. Methods. The study method was standard colonoscopy screening conducted in subjects aged 65+ in whom no clinical signs of CRC were observed. The subjects were also assessed for their nutrition and the frequency of consumption of selected products, including red meat, vegetables, fruit and fried foods, using a standardized questionnaire prepared in cooperation with the Department of Nutrition and Dietetics, Collegium Medicum in Bydgoszcz, Poland. Results. Most CRC detections and the greatest number of excised adenomas were reported in subjects consuming vegetables as rarely as several times per year. Conclusions. Consumption of vegetables, among other foods, as part of rational nutrition from childhood through adult life may reduce the morbidity and mortality due to CRC.

Background & Aims: We evaluated the quality and safety of colonoscopies performed by nurse and physician endoscopy trainees as well as the cost differences. Methods: We performed a study of 7 nurse and 8 physician (gastroenterology fellows) endoscopy trainees at 2 medical centers in the Netherlands from September 2008 through April 2012. At the beginning of the study, the subjects had no experience in endoscopy; they were trained in gastrointestinal endoscopy according to the regulations of the Dutch Society of Gastroenterology, performing a minimum of 100 colonoscopies. Each trainee then performed 135 consecutive colonoscopies (866 total by nurse trainees and 1080 by physician trainees) under supervision of a gastroenterologist; the colonoscopies were evaluated for quality and safety. We performed statistical analyses of data, assessing multilevel and cost minimization. The mean age of the patients was 57 years, and about half were women in each group. Results: The endoscopic quality and safety were comparable between nurse and physician trainees. Overall rates of cecal intubation were 95% for nurses and 93% for physicians (P = .38), including procedures that required assistance from a supervisor; mean withdrawal times were 10.4 and 9.8 minutes, respectively (P = .44). Each group detected 27% of adenomas and had a 0.5% rate of complication. In both groups, the rates of unassisted cecal intubation gradually increased with the number of colonoscopies performed, from 70% for nurses and 74% for physicians at the beginning to 89% and 86%, respectively, at the end of the assessment period. Using a strategy in which 1 gastroenterologist supervises 3 nurses, the personnel costs decreased from $64.65 to $54.58. Conclusions: In a supervised setting, nurse endoscopists perform colonoscopies according to quality and safety standards that are comparable with those of physician endoscopist and can substantially reduce costs. [Copyright &y& Elsevier]

Abstract: Objective: Although first-degree relatives (FDRs) of colorectal cancer (CRC) patients, as a high-risk population, have the most to gain from colonoscopy screening, their adherence is suboptimal. Thus, an assessment of the determinants of adherence to screening is of potential importance. Methods: A cross-sectional study was conducted among 318 FDRs of 164 CRC patients treated at Tel-Aviv Sourasky Medical Center. Interviews were conducted with a questionnaire using I-Change Model. Results: Adherence to interval colonoscopy was low with only 73 FDRs (23.0%). Greater adherence was associated with socio-demographic variables (older age, siblings, having spouse, higher level of education and income) and behavioral variables (healthier lifestyle, utilization of preventive health services). Family physicians and kin were identified as the most influential figures on uptake. Intention, affective barriers, positive attitudes, social support, cues to action, age, and health maintenance were the strongest determinants of participation in CRC screening. Conclusion: Adherence to colonoscopy is determined by multiple variables. Medical staff can play a key role in increasing adherence to colonoscopy. Practice implications: Future interventions should focus on fostering positive attitudes, overcoming barriers, enhancing social support and providing a medical recommendation. Special efforts should be invested in young FDRs, those of low socio-economic status and those who underutilize preventive medicine. [Copyright &y& Elsevier]

Background & Aims: The decrease in mortality from colorectal cancer might have begun before widespread use of screening colonoscopy and sigmoidoscopy examinations. We examined long-term time trends in colorectal cancer mortality in 6 European countries to determine when the reduction began. Methods: We analyzed mortality data from the national statistical offices of the United Kingdom (England and Wales), France, Italy, The Netherlands, Sweden, and Switzerland during the past 66 to 107 years. The data were made available by the national statistical offices of the 6 countries. Age-specific rates of death were plotted against the period of death, as period–age contours, and against the period of birth, as cohort–age contours. Results: Long-term time trends in mortality from cancers of the rectum and colon each increased among generations born from 1800 to 1880, and then decreased among all subsequent generations, in all 6 countries analyzed. Similar temporal patterns also were observed when data from men and women were analyzed separately. The birth cohort patterns of colorectal cancer mortality resemble those of gastric cancer and peptic ulcer. Conclusions: Time trends of mortality from colorectal cancer, in 6 European countries, are associated with birth cohort patterns: colorectal cancer mortality decreased among all generations since 1880. These patterns indicate that in addition to the use of screening colonoscopy, other factors, such as changes in Helicobacter pylori infection, may have affected mortality. [ABSTRACT FROM AUTHOR]

Background: After colon cancer screening, large numbers of persons discovered with colon polyps may receive post-polypectomy surveillance with multiple colonoscopy examinations over time. Decisions about surveillance interval are based in part on polyp size, histology, and number.Aims: To learn physicians' recommendations for post-polypectomy surveillance from physicians' office charts.Methods: Among 322 physicians performing colonoscopy in 126 practices in N. Carolina, offices of 152 physicians in 55 practices were visited to extract chart data, for each physician, on 125 consecutive persons having colonoscopy in 2003. Subjects included persons with first-time colonoscopy and no positive family history or other indication beyond colonoscopy findings that might affect post-polypectomy surveillance recommendations. Data were extracted about demographics, reason for colonoscopy, family history, symptoms, bowel prep, extent of examination, and features of each polyp including location, size, histology. Recommendations for post-polypectomy surveillance were noted.Results: Among 10,089 first-time colonoscopy examinations, hyperplastic polyps were found in 4.5% of subjects, in whom follow-up by 4-6 years was recommended in 24%, sooner than recommended in guidelines. Of the 6.6% of persons with only small adenomas, 35% were recommended to return in 1-3 years (sooner than recommended in some guidelines) and 77% by 6 years. Surveillance interval tended to be shorter if colon prep was less than "excellent." Prep quality was not reported for 32% of examinations.Conclusions: Surveillance intervals after polypectomy of low-risk polyps may be more aggressive than guidelines recommend. The quality of post-polypectomy surveillance might be improved by increased attention to guidelines, bowel prep, and reporting. [ABSTRACT FROM AUTHOR]

Background: The incidence of colorectal cancer (CRC) in Hong Kong is rising. The trend of colonoscopy demand is uncertain. Aim: To investigate colonoscopy demand and practice in a Hong Kong regional hospital over the past nine years. Methods: Colonoscopy data from 1st January 1997 to 31st August 2005 were retrieved and divided into two equal periods for comparison. Colonoscopy practice and findings between the two periods were compared. Results: There was no change in the number of endoscopists and colonoscopy sessions in the two periods. The number of colonoscopy done in the two periods was 2,681 and 2,871, respectively. The indications for screening of CRC/polyp (9.3 vs. 24.7%, p < 0.0001) and surveillance of CRC/polyp (4.7 vs. 10.9%, p < 0.0001) were increased, but decreased for diarrhea (18 vs. 10.2%, p < 0.0001) and per rectal bleeding (19 vs. 8.1%, p < 0.0001). The waiting time was lengthened from 2 to 4 weeks (p < 0.0001). The percentage of colonic adenomas (19.9 vs. 27.2%, p < 0.0001) was increased. A right-shift was observed in both CRC (37 vs. 50%, p = 0.018) and adenoma (21.6 vs. 38.1%, p < 0.0001). Conclusion: The number of colonoscopies performed was governed by capacity partly through lengthening of waiting time to cope with demand. Ways to improve capacity for colonoscopies is needed. Copyright © 2006 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]

Theory is little used in the prediction of physician cancer screening stage of change. Structural equation modeling was used to evaluate the theoretical predictors of stage of change to recommend colonoscopy among 235 urban physicians. Constructs from the theory of planned behavior, social-cognitive theory, and the transtheoretical model were systematically tested. As predicted, contextual factors, such as the physicians' ages, their race-ethnicities, patient race-ethnicity, and office-related barriers to preventive care were associated with stage of change through self-efficacy, normative beliefs, and negative behavioral beliefs. The findings demonstrate the relevance of these models to studying the behavior of physicians and support the development of interventions that are tailored to normative beliefs and specific physician cognitions for colonoscopy recommendation. [ABSTRACT FROM AUTHOR]

We conducted a retrospective cohort study to evaluate the subsequent colorectal cancer (CRC) risk for women with gynecologic malignancy using insurance claims data of Taiwan. We identified patients who survived cervical cancer (N = 25,370), endometrial cancer (N = 8149) and ovarian cancer (N = 7933) newly diagnosed from 1998 to 2010, and randomly selected comparisons (N = 165,808) without cancer, matched by age and diagnosis date. By the end of 2011, the incidence and hazard ratio (HR) of CRC were estimated. We found that CRC incidence rates were 1.26-, 2.20-, and 1.61-fold higher in women with cervical, endometrial and ovarian cancers, respectively, than in comparisons (1.09/1000 person–years). The CRC incidence increased with age. Higher adjusted HRs of CRC appeared within 3 years for women with endometrial and ovarian cancers, but not until the 4th to 7th years of follow up for cervical cancer survivals. Cancer treatments could reduce CRC risks, but not significantly. However, ovarian cancer patients receiving surgery alone had an incidence of 3.33/1000 person–years for CRC with an adjusted HR of 3.79 (95% CI 1.11–12.9) compared to patients without any treatment. In conclusion, gynecologic cancer patients are at an increased risk of developing CRC, sooner for those with endometrial or ovarian cancer than those with cervical cancer. [ABSTRACT FROM AUTHOR]

Regular colonoscopy even with short intervals does not prevent all colorectal cancers (CRC) in Lynch syndrome (LS). In the present study, we asked whether cancers detected under regular colonoscopy surveillance (incident cancers) are phenotypically different from cancers detected at first colonoscopy (prevalent cancers). We analyzed clinical, histological, immunological and mutational characteristics, including panel sequencing and high-throughput coding microsatellite (cMS) analysis, in 28 incident and 67 prevalent LS CRCs (n total = 95). Incident cancers presented with lower UICC and T stage compared to prevalent cancers (p < 0.0005). The majority of incident cancers (21/28) were detected after previous colonoscopy without any pathological findings. On the molecular level, incident cancers presented with a significantly lower KRAS codon 12/13 (1/23, 4.3% vs. 11/21, 52%; p = 0.0005) and pathogenic TP53 mutation frequency (0/17, 0% vs. 7/21, 33.3%; p = 0.0108,) compared to prevalent cancers; 10/17 (58.8%) incident cancers harbored one or more truncating APC mutations, all showing mutational signatures of mismatch repair (MMR) deficiency. The proportion of MMR deficiency-related mutational events was significantly higher in incident compared to prevalent CRC (p = 0.018). In conclusion, our study identifies a set of features indicative of biological differences between incident and prevalent cancers in LS, which should further be monitored in prospective LS screening studies to guide towards optimized prevention protocols. [ABSTRACT FROM AUTHOR]

Introduction: The British Columbia Colon Screening Program (BCCSP) was implemented in November 2013 with the goal of reducing colorectal cancer mortality via the early detection of colorectal cancer and removal of its precursor lesions. In addition to this, various lesions of epithelial and mesenchymal origin have been incidentally discovered. This study focuses on lesions detected beyond the conventional adenomata. Methods: The pathology of specimens collected through the BCCSP from November 2013 to December 2017 was assessed using data collected by the British Columbia Cancer Agency (BCCA). Results: There were 88,541 colonoscopies performed in the period from November 2013 to December 2017. Most lesions (n = 55595, 51.6%) were tubular adenomata, followed by hyperplastic polyps (n = 21343, 19.8%), tubulovillous adenomas (n = 7100, 6.6%), sessile serrated adenomas (n = 5107, 4.7%), villous adenomas (n = 545, 0.5%), and traditional serrated adenomas (n = 271, 0.3%). Only 0.7% (n = 739) were adenocarcinomas. Eight percent (n = 8643) were normal, while 1.5% (n = 1658) showed only inflammation. The remainder (n = 6372, 5.9%) showed other pathology, including inflammatory polyps (n = 1020), mesenchymomas (n = 220), leiomyomas (n = 210), neuroendocrine tumours (n = 65), juvenile polyps (n = 56), Peutz-Jeghers polyps (n= 24), squamous cell carcinomas (n = 13), and one gastrointestinal stromal tumour. Conclusions: In addition to the early detection of colorectal cancer and its precursors, the BCCSP has detected a variety of incidental non-adenomatous pathologies which has allowed for adequate patient assessment and follow up. [ABSTRACT FROM AUTHOR]

Background & Aims Individuals with cystic fibrosis are at increased risk of colorectal cancer (CRC) compared with the general population, and risk is higher among those who received an organ transplant. We performed a cost-effectiveness analysis to determine optimal CRC screening strategies for patients with cystic fibrosis. Methods We adjusted the existing Microsimulation Screening Analysis-Colon model to reflect increased CRC risk and lower life expectancy in patients with cystic fibrosis. Modeling was performed separately for individuals who never received an organ transplant and patients who had received an organ transplant. We modeled 76 colonoscopy screening strategies that varied the age range and screening interval. The optimal screening strategy was determined based on a willingness to pay threshold of $100,000 per life-year gained. Sensitivity and supplementary analyses were performed, including fecal immunochemical test (FIT) as an alternative test, earlier ages of transplantation, and increased rates of colonoscopy complications, to assess if optimal screening strategies would change. Results Colonoscopy every 5 years, starting at an age of 40 years, was the optimal colonoscopy strategy for patients with cystic fibrosis who never received an organ transplant; this strategy prevented 79% of deaths from CRC. Among patients with cystic fibrosis who had received an organ transplant, optimal colonoscopy screening should start at an age of 30 or 35 years, depending on the patient’s age at time of transplantation. Annual FIT screening was predicted to be cost-effective for patients with cystic fibrosis. However, the level of accuracy of the FIT in this population is not clear. Conclusions Using a Microsimulation Screening Analysis-Colon model, we found screening of patients with cystic fibrosis for CRC to be cost effective. Because of the higher risk of CRC in these patients, screening should start at an earlier age with a shorter screening interval. The findings of this study (especially those on FIT screening) may be limited by restricted evidence available for patients with cystic fibrosis. [ABSTRACT FROM AUTHOR]

First-degree relatives of patients with colorectal cancer (CRC) are at high risk of this disease. For this reason, medical organizations and clinical guidelines recommend more intensive screening and surveillance for such first-degree relatives than for the average-risk population. Colonoscopy has been the cornerstone of CRC screening in this setting. Although colonoscopy is the most sensitive technique for the detection of neoplastic lesions (especially non-advanced adenomas), its role is less clear for CRC. In addition, screening colonoscopy has several limitations that may affect the success of a screening campaign, such as poor participant acceptance, the need for skilled endoscopists, participant access to screening colonoscopy, overburdened endoscopy units, potential complications, and procedure-related costs. In addition, recent evidence has cast doubt on the advantage of colonoscopy over other strategies for the detection of advanced neoplastic lesions. Despite being less sensitive in general, other screening methods frequently recommended in the average-risk population may be more acceptable and thus help increase CRC screening uptake. This review discusses recent evidence on the risk of CRC in first-degree relatives, the advantages and disadvantages of each screening technique, participation rates depending on the technique, patient preferences, and barriers to screening., (Copyright © 2015 Elsevier España, S.L.U. and AEEH y AEG. All rights reserved.)