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Objetivo: el cáncer de seno en hombres es un diagnóstico subestimado y el tratamiento de elección es la mastectomía. Se han descrito diferentes técnicas quirúrgicas, entre ellas: la cirugía conservadora de mama en comparación con mastectomía simple, sin embargo, aún se desconoce la efectividad real de estas técnicas frente a la menor cantidad de complicaciones. Así que se pretendió evaluar sistemáticamente la literatura científica sobre la efectividad de estas 2 técnicas. Metodología: revisión sistemática de la literatura hasta noviembre del 2022, donde se siguió la metodología Prisma de Cochrane. Se evaluó la mejor evidencia disponible sobre la efectividad de la cirugía conservadora de mama al compararla con la mastectomía tradicional. Otros desenlaces evaluados fueron la sobrevida global y sobrevida libre de enfermedad. Resultados: de 1054 estudios iniciales, 7 cumplieron criterios para su selección y análisis. Ambas técnicas mostraron efectividad adecuada. En cuanto supervivencia libre de enfermedad, tanto a 5 como a 10 años, y supervivencia global no hubo significancia estadística entre las 2 técnicas quirúrgicas. Se evidenciaron más desenlaces negativos cosméticos y funcionales en la mastectomía. Conclusiones: la cirugía conservadora de mama es una opción que se debe considerar en hombres con cáncer de mama, ya que (respecto a supervivencia libre de enfermedad y supervivencia global) no hay diferencia estadística frente a la mastectomía y puede tener mejores desenlaces cosméticos. El papel de la radioterapia adyuvante es tema de nuevos estudios adicionales.

Purpose: The use of advanced energy devices for mastectomy and axillary lymph node dissection can reduce perioperative blood loss, seroma formation, and drainage duration/volume. Retraction using fiberoptic retractors can help visualize deep and narrow surgical fields. We aimed to compare the postoperative outcomes between single-incision breast-conserving surgery (SIBCS) and conventional breast-conserving surgery (CBCS) with axillary staging using advanced energy devices and conventional equipment, respectively. Materials and Methods: We retrospectively reviewed the medical records of 244 patients who underwent BCS with axillary surgery between March 2018 and September 2019 at Severance Hospital. The patients were grouped based on the device used to aid in axillary staging: CBCS group (n=117) used conventional electrocautery; and SIBCS group (n=127) used advanced energy devices and fiberoptic retractors. The two groups were compared for postoperative outcomes. Results: The mean patient age was 55.9 and 53.1 years in the CBCS and SIBCS groups, respectively. Incision size was significantly smaller in the SIBCS group than in the CBCS group (6.3±2.1 cm vs. 7.5±2.5 cm, p=0.044). There were no significant differences between the two groups in terms of operating time (126.0±40.0 min vs. 127.0±63.0 min, p=0.828), operative blood loss (11.0±31.0 mL vs. 7.0±18.0 mL, p=0.100), drainage duration (7.0±3.0 d vs. 8.0±4.0 d, p=0.288), and complications (1.70% vs. 2.36%, p=0.523). Conclusion: Using advanced energy devices for SIBCS with axillary staging reduced incision size and provided better cosmetic outcomes compared to those using the conventional method. Advanced energy devices may offer better surgical outcomes in patients who undergo BCS with axillary staging. [ABSTRACT FROM AUTHOR]

Background: Recent data suggest that breast-conserving surgery (BCS) may positively impact overall survival (OS) in early breast cancer. However, the role of BCS in locally advanced breast cancer (LABC) following neoadjuvant therapy (NAT) remains uncertain. Methods: We conducted a retrospective cohort study involving 530 LABC patients who underwent surgery after NAT between 2010 and 2015. Outcomes examined included OS, distant recurrence rates (DRR), and locoregional recurrence rates (LRRs). Results: Among the 927 breast cancer patients who received NAT, 530 were eligible for our study. Of these, 24.6% underwent BCS, while 75.4% underwent mastectomy (MS). The median follow-up duration was 79 months. BCS patients exhibited a higher pathological complete response (PCR) rate compared to those who underwent MS (22.3% vs. 10%, p < 0.001). The 6-year OS rates for BCS and MS were 81.5% and 62%, respectively (p < 0.000). In multivariate OS analysis, MS was associated with worse outcomes (OR 1.678; 95% CI 1.069-2.635; p = 0.024), as was body mass index (BMI) (OR 1.031; 95% CI 1.006-1.058; p = 0.017), and stage IIIB or IIIC (OR 2.450; 95% CI 1.561-3.846; p < 0.000). Conversely, PCR (OR 0.42; 95% CI 0.220-0.801; p = 0.008) was associated with improved survival. DRR was significantly lower in BCS (15.4%) compared to MS (36.8%) (OR 0.298; 95% CI 0.177-0.504). LRRs were comparable between BCS (9.2%) and MS (9.5%) (OR 0.693; 95% CI 0.347-1.383). Conclusion: Our findings suggest that BCS is oncologically safe, even for patients with large lesions, and is associated with superior OS rates compared to MS. Additionally, lower BMI, lower pretreatment stage, and achieving PCR were associated with improved survival outcomes. [ABSTRACT FROM AUTHOR]

BackgroundRecent data suggest that breast-conserving surgery (BCS) may positively impact overall survival (OS) in early breast cancer. However, the role of BCS in locally advanced breast cancer (LABC) following neoadjuvant therapy (NAT) remains uncertain.MethodsWe conducted a retrospective cohort study involving 530 LABC patients who underwent surgery after NAT between 2010 and 2015. Outcomes examined included OS, distant recurrence rates (DRR), and loco-regional recurrence rates (LRRs).ResultsAmong the 927 breast cancer patients who received NAT, 530 were eligible for our study. Of these, 24.6% underwent BCS, while 75.4% underwent mastectomy (MS). The median follow-up duration was 79 months. BCS patients exhibited a higher pathological complete response (PCR) rate compared to those who underwent MS (22.3% vs. 10%, p < 0.001). The 6-year OS rates for BCS and MS were 81.5% and 62%, respectively (p < 0.000). In multivariate OS analysis, MS was associated with worse outcomes (OR 1.678; 95% CI 1.069–2.635; p = 0.024), as was body mass index (BMI) (OR 1.031; 95% CI 1.006–1.058; p = 0.017), and stage IIIB or IIIC (OR 2.450; 95% CI 1.561–3.846; p < 0.000). Conversely, PCR (OR 0.42; 95% CI 0.220–0.801; p = 0.008) was associated with improved survival. DRR was significantly lower in BCS (15.4%) compared to MS (36.8%) (OR 0.298; 95% CI 0.177–0.504). LRRs were comparable between BCS (9.2%) and MS (9.5%) (OR 0.693; 95% CI 0.347–1.383).ConclusionOur findings suggest that BCS is oncologically safe, even for patients with large lesions, and is associated with superior OS rates compared to MS. Additionally, lower BMI, lower pretreatment stage, and achieving PCR were associated with improved survival outcomes.

Abstract Objective Nipple-sparing mastectomy (NSM) has been traditionally used in selected cases with tumor-to-nipple distance > 2 cm and negative frozen section of the base of the nipple. Recommending NSM in unselected populations remains controversial. The present study evaluated the oncological outcomes of patients submitted to NSM in an unselected population seen at a single center. Methods This retrospective cohort study included unselected patients with invasive carcinoma or ductal carcinoma in situ (DCIS) who underwent NSM in 2010 to 2020. The endpoints were locoregional recurrence, disease-free survival (DFS), and overall survival (OS), irrespective of tumor size or tumor-to-nipple distance. Results Seventy-six patients (mean age 46.1 years) (58 invasive carcinomas/18 DCIS) were included. The most invasive carcinomas were hormone-positive (60%) (HER2 overexpression: 24%; triple-negative: 16%), while 39% of DCIS were high-grade. Invasive carcinomas were T2 in 66% of cases, with axillary metastases in 38%. Surgical margins were all negative. All patients with invasive carcinoma received systemic treatment and 38% underwent radiotherapy. After a mean of 34.8 months, 3 patients with invasive carcinoma (5.1%) and 1 with DCIS (5.5%) had local recurrence. Two patients had distant metastasis and died during follow-up. The 5-year OS and DFS rates for invasive carcinoma were 98% and 83%, respectively. Conclusion In unselected cases, the 5-year oncological outcomes following NSM were found to be acceptable and comparable to previous reports. Further studies are required.

Background: Survival after breast conserving surgery (BCS) vs. modified radical mastectomy (MRM) is a controversial issue. In this study, we want to compare the disease-free survival (DFS) of women who underwent BCS with those treated by MRM.Method: In this historical cohort study, a total of 1097 women who were diagnosed with breast cancer between 2001 and 2007 and received modified MRM or BCS were entered into the study and followed up to March 2017. Kaplan-Meier estimator and extended cox model, and Cox proportional hazards model with propensity score weighting were implemented to compare overall survival between two groups.Results: A total of 283 women with a maximum follow-up of 11.1 years and age 47.17 ± 11.278 were met the inclusion criteria. The results of the extended cox model did not show any difference between the survival of two groups (P = 0.35). After implementing the Cox model with propensity score weighting, the inferences remained unchanged (P = 0.67).Conclusion: The patients treated with BCS tend to have the same DFS rate as those who underwent a mastectomy in a randomized controlled trial-like setting using propensity score weighting.

Background: Survival after breast conserving surgery (BCS) vs. modified radical mastectomy (MRM) is a controversial issue. In this study, we want to compare the disease-free survival (DFS) of women who underwent BCS with those treated by MRM. Method: In this historical cohort study, a total of 1097 women who were diagnosed with breast cancer between 2001 and 2007 and received modified MRM or BCS were entered into the study and followed up to March 2017. Kaplan-Meier estimator and extended cox model, and Cox proportional hazards model with propensity score weighting were implemented to compare overall survival between two groups. Results: A total of 283 women with a maximum follow-up of 11.1 years and age 47.17 ± 11.278 were met the inclusion criteria. The results of the extended cox model did not show any difference between the survival of two groups (P = 0.35). After implementing the Cox model with propensity score weighting, the inferences remained unchanged (P = 0.67). Conclusion: The patients treated with BCS tend to have the same DFS rate as those who underwent a mastectomy in a randomized controlled trial-like setting using propensity score weighting. [ABSTRACT FROM AUTHOR]

Background: This study aimed to review specific indications of radiation therapy for triple-negative breast cancer (TNBC), and to introduce the hypothesis of TNBC as an independent predictor for postmastectomy radiation therapy (PMRT ). Materials and methods: Two reviewers independently searched two electronic databases (Pubmed and Embase), with the inclusion dates of January 2000 to December 2021, for the following terms: “mastectomy” or “breast conserving surgery” or “lumpectomy”, and “radiation” or “radiotherapy”, and “triple negative” and “recurrence”. All evidence was explored by two reviewers, then organized into a narrative review considering grades of recommendation. Results: Patients with TNBC are candidates for breast conserving surgery (grade of recommendation B). Postoperative whole-breast irradiation must be offered following breast conserving surgery (grade of recommendation A). Do not omit postoperative radiation therapy in older patients with TNBC (grade of recommendation B). Do not use partial-breast irradiation in patients with TNBC (grade of recommendation B). Postmastectomy radiation therapy should be offered for women with T3–T4 or node- positive TNBC, for any number of positive nodes (grade of recommendation A). Radiation therapy following mastectomy might also benefit patients with T1–T2 node-negative TNBC (grade of recommendation B). For patients treated with neoadjuvant systemic therapy, radiation therapy indication is based on pretreatment features. Retrospective studies suggest that residual TNBC is sensitive to radiation therapy to optimize locoregional control (grade of recommendation C). Conclusions: Postoperative radiation therapy should be offered for most patients with TNBC. Upcoming studies, preferably prospective randomized trials, should evaluate the indications of radiation therapy, especially in the context of novel systemic treatments. [ABSTRACT FROM AUTHOR]

Introduction: Breast cancer is the second most common cancer among women. Constant scientific evolution has allowed increasingly less invasive surgical approaches, reducing treatment-related morbidity without cancer damage. The objective of this article is to show the surgical results and the versatility of reduction mammoplasty with the modified Pitanguy technique to optimize the immediate reconstruction associated with cancer surgery. Methods: We present the cases of three patients who underwent the proposed technique. Marking of the breast diagnosed with cancer is planned following the principles of reduction mammoplasty described by Pitanguy. However, the inferolateral resection triangle is transposed into the supratumoral area. It can be placed from the junction of the lateral quadrants (JLQ) to the superolateral quadrant (SLQ) of the oncological breast. Results: the three patients underwent the described technique associated with contralateral symmetrization mammoplasty with the Pitanguy technique. All were submitted to adjuvant radiation therapy, associated or not with chemotherapy. Two patients progressed without incident and one had a small necrosis of 1x1 cm at the flaps lower junction in the breast with cancer, which was treated conservatively without delaying the adjuvant treatment. All were satisfied with the aesthetic result. Conclusion: The described technique proved to be a good alternative for tumors located between the JLQ and the SLQ of the oncological breast. It provides broader resections and thus expands the indication for conservative surgery and reduces the need for radical surgery, with better aesthetic results without impairment of the cancer outcome

Copyright of Médicas UIS is the property of Universidad Industrial de Santander and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction: Breast cancer is the most common malignant tumour and the second cause of death among women in Poland following lung cancer. Its therapy includes a number of procedures, including surgical treatment, the choice of which depends, among others, on the histological form of the cancer and disease severity. In recent years, radical surgical techniques have been replaced by conserving ones, and in the context of routine resection of the axillary lymph nodes (lymphadenectomy), biopsy was introduced, i.e. sentinel lymph node biopsy (SNB). Also, wide access to reconstructive treatments carried out with various techniques, using patients’ own tissues or artificial materials (breast implants) have been applied. Study aim: The aim of the work is to present the current state of knowledge on the principles of breast cancer treatment and its undesirable consequences, as well as the selection of physiotherapeutic methods depending on the type of upper limb dysfunction as a result of the performed surgery. Research materials: The research materials consist of patients treated using various surgical and oncological methods as well as physiotherapeutic procedures at the Holy Cross Oncology Centre in Kielce, from 2014 to 2016. The written consent of the Clinic Chief and patients for the publication of their image was obtained. The authors of the work do not indicate any conflict of interest. Research Methods: The research methodology was based on the presentation of selected patients treated using various oncological and surgical methods for breast cancer treatment, as well as characterization of the physiotherapeutic methods necessary in restoring expected functional upper limb status in these patients. Conclusions: Modern methods used in breast cancer treatment should be conditioned by good cooperation of an entire team of specialists from various clinical areas and physiotherapists. The purpose of this procedure is to cure the patient, minimize the occurrence of complications and adverse side effects, and restore functional capacity. An integral part of such breast cancer treatment patients is, among others, their effective rehabilitation.

Effective intraoperative tumor margin assessment is needed to reduce re‐excision rates in breast‐conserving surgery (BCS). Mapping the attenuation coefficient in optical coherence tomography (OCT) throughout a sample to create an image (attenuation imaging) is one promising approach. For the first time, three‐dimensional OCT attenuation imaging of human breast tissue microarchitecture using a wide‐field (up to ~45 × 45 × 3.5 mm) imaging system is demonstrated. Representative results from three mastectomy and one BCS specimen (from 31 specimens) are presented with co‐registered postoperative histology. Attenuation imaging is shown to provide substantially improved contrast over OCT, delineating nuanced features within tumors (including necrosis and variations in tumor cell density and growth patterns) and benign features (such as sclerosing adenosis). Additionally, quantitative micro‐elastography (QME) images presented alongside OCT and attenuation images show that these techniques provide complementary contrast, suggesting that multimodal imaging could increase tissue identification accuracy and potentially improve tumor margin assessment. [ABSTRACT FROM AUTHOR]

A 22-years-old female patient at 171 cm and 67 kg visited the Department of Breast Surgery of the hospital with a mass accompanied with pain on the left side breast as chief complaints. Since physical examination revealed a suspected huge mass, breast surgeon decided to perform surgical excision and requested anesthesia to our department. Surgery of breast tumor is often under local anesthesia. However, in case of big size tumor, surgery is usually performed under general anesthesia. The patient feared general anesthesia. Unlike abdominal surgery, there is no need to control visceral pain for breast and anterior thoracic wall surgery. Therefore, we decided to perform resection under regional anesthesia. Herein, we report a successful anesthetic and pain management of the patient undergoing excision of a huge breast fibroadenoma under regional anesthesia using Pecs II and internal intercostal plane block.

Background: In addition to conventional breast‐conserving surgery (BCS), oncoplastic breast surgery (OBS) is an operation technique that strives simultaneously to increase oncological safety and patient's satisfaction. It is the combination of the best‐proven techniques in plastic surgery with surgery for breast cancer. In a growing number of indications, OBS overcomes the limit of conventional BCS by allowing larger resection volumes while avoiding deformities. The aim of our retrospective study (2012–2014) was to compare oncological outcomes of OBS versus BCS. Methods: We compared two groups of patients with primary non‐metastatic breast tumours: group A (n = 291), where BCS was performed, versus group B (n = 52), where OBS was performed. Surgical interventions were performed in German and Swiss teaching hospital settings. The surgeon for group B had subspecialist training in OBS. We assessed outcome in term of re‐excision rates, resection margin and complications. Results: Groups were homogenous (no significant differences in terms of age, tumour size, tumour type or grade). The resection margin was larger in group B (7 mm) than in group A (3 mm). Re‐excision rate of group B (8%) was significantly lower than in group A (31%). Complication rates were comparably low in groups A and B. Conclusion: Despite the limits of retrospective design, our study confirms that OBS is safe and reduces the re‐excision rates and the need for further surgery. OBS has the potential to improve oncological care and should be more widely adopted. [ABSTRACT FROM AUTHOR]

Copyright of Der Onkologe is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background Breast conservation therapy (BCT) consists of breast conservation surgery (BCS) and radiotherapy (RT). Neoadjuvant chemotherapy (NACT) can downstage tumors, broadening BCS eligibility in patients requiring mastectomy. However, tumor downstaging does not obviate need for RT. This study evaluated factors that predict RT omission after NACT and BCS. Methods The National Cancer Database was queried for women with unilateral, clinical stage II-III breast cancer, treated with NACT and BCS between 2008 and 2012. Patients not receiving RT after NACT and BCS were identified. A subgroup analysis was performed eliminating patients for whom RT was recommended but not received. Results Among 10,220 patients meeting study eligibility, 974 (9.53%) did not receive RT after BCS. Predictors of RT omission included older age, insurance status, facility type, facility region, more recent year of diagnosis, receptor status unknown, human epidermal growth factor receptor 2 status positive or unknown, and positive margins. Factors increasing the likelihood of RT receipt included cN3 disease, receptor positivity, and primary downstaging. Race, Hispanicity, education, income, comorbidities, rural versus urban setting, histology, grade, and nodal stage change were not associated with RT omission. When excluding the 314 patients for whom RT was recommended but not received, age, Medicaid insurance, facility type, facility region, receptor status unknown, human epidermal growth factor receptor 2 status unknown, and positive margins were predictors of RT omission. Conclusions Race, comorbidities, and socioeconomic status were not predictors of RT omission. It remains unclear whether omission of RT in some cases is due to lack of physician knowledge. Further efforts are needed to ensure that physicians and patients recognize that RT is a vital and required part of BCT, even after NACT. [ABSTRACT FROM AUTHOR]

Purpose We evaluated the effect of positive superficial and/or deep margin status on local recurrence (LR) in invasive breast cancer treated with breast-conserving surgery (BCS) followed by radiotherapy. Materials and Methods In total, 3,403 stage 1 and 2 invasive breast cancer patients treated with BCS followed by radiotherapy from January 2000 to December 2008 were included in this study. These patients were divided into three groups according to margin status: clear resection margin status for all sections (group 1, n=3,195); positive margin status in superficial and/or deep sections (group 2, n=121); and positive peripheral parenchymal margin regardless of superficial and/or deep margin involvement (group 3, n=87). The LR-free survival between these three groups was compared and the prognostic role of margin status was analyzed. Results Across all groups, age, tumor size, nodal status, and human epidermal growth factor receptor 2 status did not significantly differ. High grade, positive extensive intraductal component, hormone receptor positivity, hormone therapy received, and chemotherapy not received were more prevalent in groups 2 and 3 than in group 1. Five-year LR rates in groups 1, 2, and 3 were 1.9%, 1.7%, and 7.7%, respectively. Multivariate analysis revealed that group 3 was a significant predictor for LR (hazard ratio [HR], 4.78; p < 0.001), but that positive superficial and/or deep margin was not (HR, 0.66; p=0.57). Conclusion Superficial and/or deep margin involvement following BCS is not an important predictor for LR. [ABSTRACT FROM AUTHOR]

Copyright of Medical Rehabilitation / Rehabilitacja Medyczna is the property of Medical Rehabilitation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Purpose: To report the results of a correlation analysis of skin dose assessed by in vivo dosimetry and the incidence of acute toxicity. This is a phase 2 trial evaluating the feasibility of intraoperative radiotherapy (IORT) as a boost for breast cancer patients. Materials and Methods: Eligible patients were treated with IORT of 20 Gy followed by whole breast irradiation (WBI) of 46 Gy. A total of 55 patients with a minimum follow-up of 1 month after WBI were evaluated. Optically stimulated luminescence dosimeter (OSLD) detected radiation dose delivered to the skin during IORT. Acute toxicity was recorded according to the Common Terminology Criteria for Adverse Events v4.0. Clinical parameters were correlated with seroma formation and maximum skin dose. Results: Median follow-up after IORT was 25.9 weeks (range, 12.7 to 50.3 weeks). Prior to WBI, only one patient developed acute toxicity. Following WBI, 30 patients experienced grade 1 skin toxicity and three patients had grade 2 skin toxicity. Skin dose during IORT exceeded 5 Gy in two patients: with grade 2 complications around the surgical scar in one patient who received 8.42 Gy. Breast volume on preoperative images (p = 0.001), ratio of applicator diameter and breast volume (p = 0.002), and distance between skin and tumor (p = 0.003) showed significant correlations with maximum skin dose. Conclusions: IORT as a boost was well-tolerated among Korean women without severe acute complication. In vivo dosimetry with OSLD can help ensure safe delivery of IORT as a boost. [ABSTRACT FROM AUTHOR]

Purpose/Objectives: To identify previously unstudied factors predicting re excision following breast-conserving surgery (BCS) and to assess the feasibility of obtaining data about breast density for predictive modeling. Design: Retrospective secondary data analysis. Setting: Data were obtained from the cancer registry and electronic health records (EHRs) at Texas Health Harris Methodist Hospital, a large, urban, private, nonprofit hospital in North Texas. Sample: 244 patients choosing BCS from 2011'2012. Methods: Data were subjected to univariate analyses (chi square) followed by logistic regression. Main Research Variables: The primary dependent variable was re-excision following BCS. Predictors of interest included lifestyle factors, time from diagnosis to surgery, surgical approach, patient age, and breast density, and controlled for covariates, such as assay results. Findings: Three factors predicted re-excision with 87% accuracy: time from diagnosis to surgery, needle localization, and age. Missing data precluded using breast density as a predictor. Conclusions: Women younger than 60 years whose surgery included placement of a wire for localization of tissue to be removed and who underwent surgery soon after diagnosis are the least likely to require reoperation after BCS. Data integrity is critical to the success of research using EHRs and registry information. Implications for Nursing: Nurses may improve patient outcomes by helping women considering BCS solve problems that may delay surgery. Nurses can contribute to the success of nursing research by thoroughly and accurately recording patient information in EHRs. [ABSTRACT FROM AUTHOR]

Objective:Phyllodes tumor of the breast is a rare fibroepithelial tumor. In this study, our aim is to present the clinicopathological characteristics of our patients diagnosed with phyllodes tumor of the breast and our treatment approach to the cases.Materials and Methods:The medical records of a total of 9 patients who had been treated at our clinic between 2003 and 2011 for phyllodes tumor were analyzed retrospectively.Results:The median age of the patients was 38 (20-70) years. The presenting complaint of all patients was a palpable mass in the breast. Six of the patients were diagnosed by tru-cut biopsy, two were diagnosed through excisional biopsy, and one was diagnosed through fine- needle aspiration biopsy (FNAB). Median tumor size was 9.3 (4-20) cm. Local excision was performed on all but two patients so as to have the surgical border negative and no adjuvant additional treatment was initiated. Mastectomy was performed for one of the two patients and modified radical mastectomy was performed for the other. The follow-up period of the patients was an average of 43 (5-95) months. No breast recurrences were seen during the follow-up period.Conclusion:Pre-operative diagnosis is important for these cases in order to determine the surgical approach. It is difficult to differentiate these tumors from fibroadenoma by ultrasonography and mammography. It is possible to diagnose patients through tissue biopsy. In conclusion, a surgical approach with negative margins for all patients should be taken into consideration since phyllodes tumors are generally benign both clinically and pathologically.

OBJECTIVES: to compare the impact of mastectomy and conservative surgery on the quality of life of patients with breast cancer. METHODS: an assessment was made of the quality of life of patients undergoing mastectomy or segmentary mastectomy, at the Pouso Alegre Clinical Hospital, in the Brazilian State of Minas Gerais, using SF-36. The patients were grouped by age (50 years) and years of schooling (8 years). The Mann-Whitney test was used to compare the groups with regard to the age and schooling domains of SF-36. RESULTS: a significant difference between the two groups was found in the domains of "physical functioning" (p=0.04) and "pain" (p=0.01): with the patients undergoing a mastectomy registering the worst scores. Young patients who had undergone a mastectomy displayed the worst quality of life in terms of "physical functioning" (p=0.03), "pain" (p=0.01) and "social functioning" (p=0.01); those undergoing conservative surgery aged over 50 years scored worst on "role emotional" (p=0.05). Patients undergoing a mastectomy with lower levels of schooling scored lower in "physical functioning" (p=0.01), "role physical" (p=0.05) and "pain" (p=0.05). Among those who had attended school for more than eight years, those having undergone a mastectomy scored less in the "pain" domain (p=0.04). CONCLUSIONS: patients who had undergone a mastectomy had worse results in the physical component of the evaluation of quality of life and this negative impact was more strongly felt among younger patients and those with lower levels of schooling.OBJETIVOS: comparar o impacto da mastectomia e da cirurgia conservadora na qualidade de vida de pacientes com câncer mamário. MÉTODOS: avaliou-se qualidade de vida de pacientes submetidas à mastectomia ou à mastectomia segmentar, no Hospital das Clínicas de Pouso Alegre, Minas Gerais, Brasil, utilizando-se o SF-36. As pacientes foram estratificadas quanto à idade (50 anos) e escolaridade (8 anos). Aplicou-se o teste de Mann-Whitney para comparar os grupos quanto aos domínios do SF-36, idade e escolaridade. RESULTADOS: observou-se diferença significante entre os grupos nos domínios "capacidade funcional" (p=0,04) e "dor" (p=0,01): as pacientes mastectomizadas com piores resultados. Pacientes mastectomizadas mais jovens apresentaram pior qualidade de vida em "capacidade funcional" (p=0,03), "dor" (p=0,01) e "aspectos sociais" (p=0,01); as submetidas à cirurgia conservadora, com mais de 50 anos, resultado pior em "aspectos emocionais" (p=0,05). Pacientes mastectomizadas com menor escolaridade apresentaram escores menores em "capacidade funcional" (p=0,01), "aspectos físicos" (p=0,05) e "dor" (p=0,05). Entre as que frequentaram a escola por mais de oito anos, as mastectomizadas pontuaram menos no domínio "dor" (p=0,04). CONCLUSÕES: pacientes mastectomizadas apresentaram piores resultados no componente físico da qualidade de vida, e este impacto negativo foi mais acentuado entre pacientes mais jovens e com menor escolaridade.

BACKGROUND: Depression is prevalent among women and associated with reduced quality of life, and therefore it is important to determine its incidence in adult women, especially in those with breast cancer. OBJECTIVE: To determine the occurrence of depression in women who underwent conservative surgery for breast cancer with or without breast reconstruction. METHODS: Seventy-five women aged between 18 and 65 years were enrolled. Patients had undergone conservative surgery for breast cancer with immediate breast reconstruction (n = 25) or without breast reconstruction (n = 25) at least one year before the study. The control group consisted of 25 women without cancer, but of similar age and educational level distribution as the other two groups. The Beck Depression Inventory was used to measure depression. The collected data were assessed using analysis of variance and the χ2 test. RESULTS: There were no significant differences between groups in age (p = 0.72) or educational level (p = 0.20). A smaller number of patients had undergone the menopause (p = 0.02) in the control group than in other groups. There were no significant differences in occurrence of depression between groups (χ2=9.97; p = 0.126). CONCLUSÍON: Conservative surgery for breast cancer did not affect the occurrence of depression in women, regardless of whether breast reconstruction was performed.

Oncoplastic breast conserving surgery (BCS) has emerged as a third option between conventional BCS and mastectomy. Oncoplastic BCS includes two fundamentally different approaches: volume replacement and volume displacement. The former involves partial mastectomy and immediate reconstruction of the breast with the transposition of autologous tissue from elsewhere, while the latter involves partial mastectomy and using the remaining breast tissue to fill the defect resulting from extirpation of the tumor. There are several benefits associated with oncoplastic BCS. First, it allows partial mastectomy without cosmetic penalties, and can achieve better cosmetic outcomes than total mastectomy with immediate breast reconstruction. Second, it avoids the need for total mastectomy in an increasing number of patients without compromising local control. Third, partial breast reconstruction is less extensive and has fewer complications than conventional procedures. Partial mastectomy and partial breast reconstruction can be carried out either simultaneously as a one-stage procedure, or using a two-stage approach. Although patients prefer a one-stage procedure, it requires intraoperative confirmation of complete tumor excision using frozen-section analysis. Moreover, oncoplastic BCS requires combined skills, knowledge, and understanding of both oncological and plastic surgeries, which may be optimally achieved by an oncoplastic surgeon. [ABSTRACT FROM AUTHOR]

Purpose This study evaluated the effect of surgery-radiotherapy interval (SRI) on outcomes in patients treated with adjuvant radiotherapy (RT) after breast-conserving surgery (BCS) and adjuvant four cycles of doxorubicin/cyclophosphamide (AC) followed by four cycles of taxane. Materials and Methods From 1999 to 2007, 397 eligible patients were diagnosed. The effect of SRI on outcomes was analyzed using a Cox proportional hazards model, and a maximal chi-square method was used to identify optimal cut-off value of SRI for each outcome. Results The median SRI was 6.7 months (range, 5.6 to 10.3 months). A SRI of 7 months was the significant cut-off value for distant metastasis-free survival (DMFS) and disease-free survival (DFS) using a maximal chi-square method. For overall survival, a significant cut-off value was not found. The patients with SRI > 7 months had worse 6-year DMFS and DFS than those with SRI ≤ 7 months on univariate analysis (DMFS, 81% vs. 91%, p=0.003; DFS, 78% vs. 89%, p=0.002). On multivariate analysis, SRI > 7 months did not affect DMFS and DFS. Conclusion RT delayed for more than 7 months after BCS and adjuvant four cycles of AC followed by four cycles of taxane did not compromise clinical outcomes. [ABSTRACT FROM AUTHOR]

Background: Although breast conservation therapy (BCT) is standard for breast cancer treatment, patients with tumors measuring >5 cm have been excluded from clinical trials. Nevertheless, only a few small retrospective series to date have compared BCT with mastectomy for tumors measuring >5 cm. The current study was performed to determine whether survival is equivalent for BCT versus mastectomy using a large national data set.Methods: Surveillance, Epidemiology, and End Results (SEER)-Medicare-linked cases were identified for patients aged ≥ 66 years undergoing breast conservation for invasive, noninflammatory, nonmetastatic breast cancer between 1992 and 2009. Propensity score-based adjustment was used to account for demographics and tumor and treatment factors.Results: A total of 5685 patients with tumors measuring >5.0 cm underwent breast surgery, with 15.6% receiving BCT. Mean ages of the patients and tumor sizes were similar. Predictors of BCT included neoadjuvant chemotherapy and postoperative radiotherapy use, higher income, breast cancer as a first malignancy, and a higher Charlson Comorbidity Index. Predictors of mastectomy included younger age, nonductal histology, higher grade, numbers of lymph nodes examined and found to be positive, American Joint Committee on Cancer stage III disease, postoperative chemotherapy use, and residential region of the country. Adjusted overall and breast cancer-specific survival were not different between patients treated with BCT and mastectomy (hazard ratio, 0.934; 95% confidence interval, 0.791-1.103 [P = .419] for overall survival; and subdistribution hazard ratio, 1.042; 95% confidence interval, 0.793-1.369 [P = .769] for breast cancer-specific survival), with each improving over time. The median follow-up was 7.0 years.Conclusions: For Medicare patients with tumors measuring >5 cm, survival is similar between those treated with BCT and mastectomy as for patients with smaller primary tumors. Despite exclusion from randomized trials, BCT may remain an option for patients with larger tumors when deemed clinically and cosmetically amenable to surgical resection. [ABSTRACT FROM AUTHOR]

Este fue un estudio comparativo prospectivo de 104 pacientes con cáncer de seno, a quienes se ofreció la elección entre dos tratamientos quirúrgicos conservadores: cuadrantectomía con mastopexia tipo donut (Grupo CMD, n=39) o cuadrantectomía estándar (Grupo CE, n=75). Los grupos fueron similares en tamaño radiológico del tumor, localización del tumor en el seno, tamaño histológico, y la distribución por estadios pT. En el grupo CMD, la incisión de piel fue tres veces más grande que en el grupo CE, pero con ella se obtuvo al final, una cicatriz alrededor del complejo areola-pezón, sin complicaciones posoperatorias posteriores. El volumen promedio del espécimen quirúrgico y los márgenes de sección, fueron mayores en el grupo CMD comparados con el grupo CE. Se obtuvieron márgenes libres de tumor con mayor frecuencia en el grupo CMD que en el grupo CE, pero la diferencia no fue significativa. Estos datos indican fuertemente que la técnica CMD puede ser más eficiente que la técnica CE, en términos de precisión en la resección del tejido mamario.This is a prospective comparative study comprising 104 patients with breast cancer to which two modalities of conservative therapy were offered: quadrantectomy with mastopexy doughnut type (group QMD, n = 39) or standard quadrantectomy (group QS, n = 75). The two groups had similar tumor size, location of the tumor, histology size and PT distribution. In the QMD group the skin incision was three times greater than in the QS group, but a good healing around the areola-nipple complex was achieved without postoperative complications. Both the size of the surgical specimen and the free margins were greater in the QMD group. Free section margins were more frequently achieved in the QMD group, but the difference was not significant. Our date strongly indicate that the QMD technique can be more efficient that the QS in terms of precision of mammary tissue resection.

Purpose The ability to accurately predict the likelihood of achieving breast conservation surgery (BCS) after neoadjuvant chemotherapy (NCT) is important in deciding whether NCT or surgery should be the first-line treatment in patients with operable breast cancers. Materials and Methods We reviewed the data of 513 women, who had stage II or III breast cancer and received NCT and surgery from a single institution. The ability of various clinicopathologic factors to predict the achievement of BCS and tumor size reduction to ⩽ 3 cm was assessed. Nomograms were built and validated in an independent cohort. Results BCS was performed in 50.1% of patients, with 42.2% of tumors reduced to ⩽ 3 cm after NCT. A multivariate logistic regression analysis showed that smaller initial tumor size, longer distance between the lesion and the nipple, absence of suspicious calcifications on mammography, and a single tumor were associated with BCS rather than mastectomy (p < 0.05). Negative estrogen receptor, smaller initial tumor size, higher Ki-67 level, and absence of in situ component were associated with residual tumor size ⩽ 3 cm (p < 0.05). Two nomograms were developed using these factors. The areas under the receiver operating characteristic curves for nomograms predicting BCS and residual tumor ⩽ 3 cm were 0.800 and 0.777, respectively. The calibration plots showed good agreement between the predicted and actual probabilities. Conclusion We have established a model with novel factors that predicts BCS and residual tumor size after NCT. This model can help in making treatment decisions for patients who are candidates for NCT. [ABSTRACT FROM AUTHOR]

Introduction: Breast cancer diagnosis and treatment had evolved over the past quarter century. From self-examination to mammography as main suspicion tool and from radical to conservative surgery plus radiotherapy as prefered treatment. The aim of this review was to assess the evolution of presentation and local management of breast cancer at a Chilean radio-oncology center. Materials and Methods: We analyzed 1.204 breast cancer patients who received postoperative irradiation on two four-years periods. The first period included 223 patients and coincides with the introduction of mammography and conservative surgery. The second included 981 patients managed according to current guidelines. The variables analyzed were type of clinical suspicion, time between clinical suspicion and diagnosis confirmation, type of surgery, histology and tumor size. Data were obtained from medical records and analyzed using STATA 12. Results: In the second period mammographic suspicion reached 39.8%. Time between clinical suspicion and histological diagnosis was reduced to 50%, the proportion of tumors larger than 2 cm was reduced from 61 to 45%, the proportion of DCIS was tripled from 6 to 18%, use of conservative surgery has an absolute increase of 28%. All of these differences were statistically significant (p < 0.01). Conclusion: The introduction of mammography and conservative management allowed early diagnosis of breast cancer in the analyzed population. [ABSTRACT FROM AUTHOR]

Abstract: This prospective trial was designed to assess aesthetic outcomes of oncoplastic surgery. Standardized photographs were taken of 45 breast cancer patients undergoing oncoplastic surgery, preoperatively and 6 and 12 months postoperatively (oncoplastic group), and of 45 patients treated by conservative surgery without breast reconstruction (control group). Photographs were assessed by senior male and female physicians, 2 breast surgeons and 2 plastic surgeons. Aesthetic outcomes were evaluated using patients’ own assessments (rated 0 to 10) and scoring by panelists (using 0 to 10 global rating scales and a subscales system). Patients in both groups scored the aesthetic outcomes better than physicians did. Panelists and patients considered aesthetic outcomes of oncoplastic group better than control group outcomes. Patients and plastic surgeons attributed progressively higher grades to outcomes of oncoplastic group at 6 and 12 months postoperatively; breast surgeons did not. Overall, female physicians and breast surgeons scored better the aesthetic outcomes of both groups. [Copyright &y& Elsevier]

Background: Breast conservation treatment (BCT) rate is recognized as a marker of surgical practice. An historically low BCT rate may reflect the requirement for Taranaki women to travel for adjuvant radiotherapy. The aim of this study was to determine the reasons Taranaki women with breast cancer choose mastectomy or BCT. Methods: Prospective information, on all women presenting with breast cancer between May 2004 and December 2006, was collected on a standardized questionnaire. Results: BCT was offered to 68% (140 of 206), but chosen by only 46% (n = 64) of suitable patients. If radiotherapy had been available locally, 23% (17 of 73) of patients who chose mastectomy would have instead opted for BCT. A quarter of each group of women thought they knew their surgeon's treatment preference and most chose this option. Fear of local recurrence and need for further surgery were significantly more important to those choosing mastectomy over BCT whereas what the surgeon was perceived to prefer was more important to those choosing BCT. Conclusion: The rate of BCT in Taranaki is low, despite it being offered by surgeons to the majority of patients. Local availability of radiotherapy may increase the BCT rate to a level more consistent with larger centres in New Zealand. Care must be taken to provide neutral patient guidance. [ABSTRACT FROM AUTHOR]

Rationale and Objectives: The aim of this study was to determine if patients who underwent partial-breast irradiation followed by segmental mastectomies had fewer mammographic changes on the first post-treatment mammogram than those who underwent segmental mastectomies followed by whole-breast irradiation. Materials and Methods: Subjects enrolled in a study of partial-breast irradiation therapy after segmental mastectomy (intraoperative radiation therapy) plus a random sample of patients who underwent segmental mastectomies followed by conventional whole-breast radiation therapy were identified through the institution''s breast cancer database from March 2003 through February 2006. A radiologist specializing in breast imaging reviewed and recorded each patient''s pretreatment mammogram for breast density and tumor location and the first post-treatment mammogram, obtained within the first year of treatment, for three common types of mammographic change seen after breast surgery and radiation treatment (breast edema, skin thickening, and surgical scarring), which when severe make it difficult to use mammography for continuing follow-up of the conserved breast. The extent of mammographic change was noted by the radiologist as minimal, moderate, or marked. The data were entered into a database, and statistical analysis was conducted using logistic regression models and χ2 tests. The effect of breast density on mammographic change was also assessed. Results: The severity of edema was lower with decreasing breast density (P < .006). There was no apparent effect of breast density on the severity of skin thickening. The extent of surgical scarring decreased as breast density increased (P < .026). Analysis of the data from the cumulative logistic regression models demonstrated that even after controlling for breast density, patients who underwent whole-breast radiation therapy had significantly more edema (P = .003), skin thickening (P = .003), and surgical scarring than those who underwent intraoperative radiation therapy (P < .001). Conclusion: Patients have a higher probability of having fewer post-treatment mammographic changes after partial-breast irradiation followed by segmental mastectomy than after breast conservation surgery followed by whole-breast irradiation. [Copyright &y& Elsevier]

Abstract: Introduction: The success of breast-conservation therapy (BCT) for patients with multiple ipsilateral invasive breast cancers (MIBC) is sparsely documented. Methods: A retrospective review of single-institution experience. Patients with 2 or more invasive cancers separated by normal breast tissue were included; patients with 1 invasive cancer with additional in situ lesions and those receiving neoadjuvant therapy were excluded. Results: One hundred forty-nine patients were treated over 19 years. Fifty-eight (39%) patients underwent BCT. Preoperatively, multiple tumors were suspected in more mastectomy patients than BCT patients (75% versus 62%). Most patients had 2 tumors and 1 histology. Fifty-five percent of patients with tumors within 1 quadrant underwent BCT versus 10% of patients with tumors in more than 1 quadrant. One hundred eight patients underwent sentinel lymph node (SLN) biopsy. Twenty-seven percent (34) were SLN positive. There were no regional recurrences among the SLN-negative patients. Six patients recurred: 1 nodal, 1 local, and 4 distant. The locoregional BCT recurrence rate was 3.4%. Discussion: MIBC patients can safely undergo BCT with low recurrence risk. SLNB can be performed with minimal risk of regional recurrence. [Copyright &y& Elsevier]

Mastectomy rates have been assumed to be a function of physician recommendations, although they correlate with patient involvement in decision making. The influence of age on the decision-making process and treatment choice is poorly described. All women with ductal carcinoma in situ (DCIS) and a random sample with invasive breast cancer were identified from two Surveillance Epidemiology and End Results (SEER) program registries and surveyed 6 months postoperatively. Women older than 79 years with noninvasive or localized invasive breast cancer diagnosed in 2002 were included. Women with breast-conserving therapy (BCT) contraindications were excluded. Women were questioned about involvement in surgical decision-making, inquiring if this decision was patient-based, surgeon-based, or shared. Knowledge and concerns were assessed. The response rate was 77.0%. There were 1,259 patients who met the study eligibility criteria and age data was available for 1,131. Median patient age was 59.9 years. The frequency of patient-based decisions did not vary with age ( p = 0.20), but older women had less knowledge for decision making. The mastectomy rate overall was 19.7%, with no differences in mastectomy choice by age ( p = 0.18). In logistic regression for the likelihood of undergoing mastectomy, patient involvement ( p < 0.0001), larger tumor size ( p < 0.0001), lower education ( p = 0.0002), number of surgeons consulted ( p = 0.0005), and nonwhite race origin ( p = 0.011) were significant predictors, while age, invasion, and comorbidities were not significant. Older women participate equally in breast cancer surgical decision making and are equally likely to select mastectomy, but use less knowledge to make the decision. The impact of education and ethnic origin on mastectomy use indicates the need for improved educational strategies for these groups. [ABSTRACT FROM AUTHOR]

The article presents information on a study which identified the clinical characteristics and outcomes associated with metastases to the breast from nonbreast solid neoplasms to identify determinants of survival. The medical records of patients who have metastatis to the breast from nonbreast solid organ primary tumors were reviewed for clinicopathological characteristics. The determinants of survival were investigated through Kaplan-Meier analysis.

Background: Ductal carcinoma in situ (DCIS) is a significant issue in Australia and New Zealand with rising incidence because of the implementation of mammographic screening. Current information on its natural history is unable to accurately predict progression to invasive cancer. In 2003, the National Breast Cancer Centre in Australia published recommendations for DCIS. In Australia and New Zealand, the National Breast Cancer Audit collects information on DCIS cases. This article will examine these recommendations and provide information from the audit on current DCIS management. Methods: Three thousand six hundred and twenty-nine cases of DCIS were entered by 274 breast surgeons between January 1998 and December 2004. Data items in the National Breast Cancer Audit database that were covered in the National Breast Cancer Centre recommendations were reviewed. Information was available on the following: diagnostic biopsy rates for all cases and mammographically positive cases and rates of breast conserving surgery (BCS), clear margins following BCS, postoperative radiotherapy following BCS for groups at high risk of recurrence as well as axillary procedures and tamoxifen prescription. Results: Close adherence was found in diagnostic biopsy, BCS and clear margin rates. Some high-risk groups received radiotherapy, although women with ‘close’ margins did not in 33% of cases. Axillary procedures were conducted in 23% of cases and most (81%) patients were not prescribed tamoxifen. Conclusion: There was predominantly close adherence to recommendations with three possible areas of improvement: fewer axillary procedures, an appraisal of radiotherapy practice following BCS and more investigation into tamoxifen prescription practices for DCIS. [ABSTRACT FROM AUTHOR]

Background and Objectives: Preemptive analgesia is the concept of providing analgesia before surgical incision, resulting in less postoperative pain. The purpose of this study is to determine if preemptive and/or postoperative local anesthetic infiltration of bupivacaine in patients undergoing segmental mastectomy results in less postoperative pain compared with patients receiving placebo. Methods: In this prospective, double-blinded study, 120 patients were randomized into 4 groups: group 1, preincisional (10 mL) and postoperative (10 mL) wound infiltration of 0.5% bupivicaine, (+Pre+Post); group 2, preincisional bupivacaine (10 mL) and postoperative infiltration (10 mL) of placebo (normal saline solution), (+Pre−Post); group 3, preincisional placebo (10 mL) and postoperative bupivacaine (10 mL), (−Pre+Post); or group 4, preincisional (10 mL) and postoperative infiltration of placebo (10 mL), (−Pre−Post). All patients received a standardized laryngeal mask general anesthetic. Data were recorded at the following time intervals: preoperative admission, postanesthesia care unit (PACU) admission, PACU stay, stepdown-unit admission, stepdown-unit stay, hospital discharge, and 24 hours post operation. Results: No difference was noted with respect to preoperative pain visual analog scale (VAS, 0-100 mm), surgical duration, PACU stay time, stepdown-unit stay time, incidence of postoperative nausea, or treatment for nausea in all measured time periods. The placebo group (group 4) had significantly higher mean pain VAS scores during the early postoperative period (PACU admission and PACU stay) compared to the other groups (PACU admission: group 1 = 2 ± 8, group 2 = 4 ± 11, group 3 = 3 ± 15, group 4 = 17 ± 21, P < .01; PACU stay: group 1 = 6 ± 13, group 2 = 6 ± 10, group 3 = 10 ± 21, group 4 = 20 ± 18, P < .01). Likewise, the number of patients who reported pain (pain frequency) was significantly higher in group 4 (placebo) compared with all other groups at PACU admission, PACU stay, stepdown-unit admission, and stepdown-unit stay (P ≤ .01). Conclusion: Preincisional and/or postoperative wound bupivacaine infiltration lacks preemptive analgesic effects for segmental mastectomy. [Copyright &y& Elsevier]

The wire-guided excision of nonpalpable breast cancer often results in tumor resections with inadequate margins. This prospective, randomized trial was undertaken to investigate whether intraoperative ultrasound (US) guidance enables a better margin clearance than the wire-guided technique in the breast-conserving treatment of nonpalpable breast cancers. Patients with a preoperative histological diagnosis of nonpalpable breast cancer that could be visualized both with US and mammography were included. Patients were randomized to undergo either a wire-guided or a US-guided excision. Adequate margins were defined as ≥1 mm. Of 49 included patients, 23 were assigned to undergo wire-guided excision and 26 to undergo US-guided excision. One patient crossed over to US-guided excision after inadvertent wire displacement. Mean tumor diameter, specimen weight, and operating time were similar in both groups. The excision was adequate in 24 (89%) of 27 US-guided excisions and 12 (55%) of 22 wire-guide excisions ( P=.007). US-guided excision seems to be superior to wire-guided excision with respect to margin clearance of mammographically detected and US-visible nonpalpable breast cancers. Patients do not have to undergo the unpleasant wire placement before surgery. [ABSTRACT FROM AUTHOR]

Abstract Objective To identify the biomarkers of response to neoadjuvant chemotherapy in early luminal breast cancer. Methods A cross-sectional study that included all patients with early or locallyadvanced luminal breast cancer submitted to neoadjuvant chemotherapy between 2013 and 2014. Demographic, clinic and pathologic data were retrieved from patient records. The expressions of the estrogen receptor (ER), the progesterone receptor (PR), and Ki67 were analyzed by immunohistochemistry (IHC). The status of the human epidermal growth factor receptor 2 (HER2) was evaluated by IHC and fluorescent in situ hybridization (FISH). Independent predictors of clinic and pathologic response were evaluated by stepwise logistic regression models and receiver operating characteristic (ROC) curve analysis. Results Out of 298 patients identified, 115 were included in the analysis. Clinical complete response (cCR) was observed in 43.4% of the patients (49/113), and pathologic complete response (pCR) was observed in 7.1% (8/115) of the patients. The independent predictors of cCR were premenopausal status (p < 0.001), low PR expression (≤ 50% versus > 50%; p = 0.048), and Ki67 expression ≥ 14% (versus < 14%; p = 0.01). Patients with cCR were more commonly submitted to breast conserving surgery (34.7% versus 7.8%; p < 0.001). Increasing cut-off points for Ki67 expression were associated with an increase in specificity and a decrease in sensitivity to identify patients with cCR. Conclusion Premenopausal status, lower PR expression and higher Ki67 expression were associated with a higher rate of cCR to neoadjuvant chemotherapy in luminal breast cancer.