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BACKGROUND: Oncoplastic surgery (OPS) has increased in popularity over the recent years. It is a form of breast conservation surgery allowing for larger partial mastectomy (PM) resections followed by either volume displacement or volume replacement reconstruction techniques. However, there is a lack of evidence on the effectiveness and safety of OPS with radiotherapy (OPS + RT) in high-risk breast cancer phenotypes, such as triple negative breast cancer (TNBC) and HER2 positive (HER2+) patients. Our aim was to compare the breast cancer-specific survival (BCSS) and postoperative surgical complications in OPS + RT compared to PM alone with radiation (PM + RT) and total mastectomy (MTX) without radiotherapy (MTX-RT). METHODS: Patient data were analyzed from the Surveillance, Epidemiology, and End Results (SEER) cancer registries from January 1, 2012 to December 31, 2020. Patients were stratified according to the type of surgery. Cox regression analysis was performed to assess prognostic factors of BCSS. RESULTS: A total of 24 621 patients with high-risk breast cancer phenotypes were identified, 180 underwent OPS + RT; 13 402, PM + RT; and 11 039 MTX-RT. OPS + RT was more frequently performed in younger (mean age of 65.53 years, SD: 9.29, p < 0.001), non-Hispanic White (90.5% vs. 77.7% vs. 76.3%) and single women (17.9% vs. 12.1% vs. 13.3%). MTX-RT was usually performed in patients with high histological grade, TNBC, and higher stages. Overall complication rates were higher in the MTX-RT, compared to OPS + RT and PM + RT, 2%, 1.1%, and 0.7%, respectively, p < 0.001. Rates of hematoma and surgical site infections were higher in the MTX-RT group. With a median follow-up of 46 months, OPS + RT had better BCSS rates at 5 years compared to PM + RT and MTX-RT (97.1% vs. 94.7% vs. 89.8%, p < 0.001). MTX-RT was found to be an independent prognostic factor of worse BCSS compared to OPS + RT (hazard ratio [HR] = 2.584; 95% confidence interval [CI]: 1.005-7.171), while PM + RT had no difference compared to OPS + RT (HR = 1.670, 95% CI: 0.624-4.469). CONCLUSIONS: OPS is a safe breast surgical option in patients with HER2+ and TNBC. Patients with high-risk phenotypes who underwent OPS + RT and have similar BCSS and complication rates compared to standard breast surgical options. As such, OPS should be considered as an option whenever breast conservation surgery is being discussed.

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Imprecision in breast conserving surgery results in high rates of take back to theatre for reexcision of margins. This paper reviews the various approaches to improving the precision of oncological margin control in breast conserving surgery. The review describes the rationale for improved tissue characterization over tumor localization and explores technology-free approaches, as well as progress being made to develop and test innovative technological solutions.

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BACKGROUND: Breast conservation therapy is a widely accepted approach in treating breast cancer, yet the average re-excision rates are approximately 25% despite surgical advancements. The Food and Drug Administration (FDA)-approved MarginProbe® device uses radiofrequency spectroscopy for intraoperative margin assessment, potentially reducing re-excision rates. This study evaluated the effectiveness of MarginProbe® in reducing re-excisions compared with standard of care (SOC). METHODS: A prospective cohort with MarginProbe® usage during partial mastectomies from June 2019 to July 2023 (153 patients) was compared with a retrospective control group without the device from January 2015 to May 2019 (300 patients). Both groups underwent partial mastectomies performed by two breast surgeons. Positive margins were defined as tumor on ink for invasive cancers and within 2 mm for ductal carcinoma in situ. RESULTS: When control was used for patient demographics and tumor characteristics, the findings showed that MarginProbe® significantly decreased the probability of re-excision by 58% (p < 0.001), although it led to a higher shave volume, with an average of 9.8 cc additional tissue removed compared with SOC (p < 0.001). Human epidermal growth factor 2 (HER2) positivity was significantly associated with increased odds of re-excision (p = 0.036). MarginProbe® demonstrated a sensitivity of 70.1% and a specificity of 47.5%. CONCLUSIONS: MarginProbe® is an effective adjunct for intraoperative margin assessment to decrease re-excision rates. However, patient selection is paramount. Given its significant increase in shave volume, women with small breasts may be at higher risk for poor cosmesis. Surgeons should exercise clinical judgement when determining the suitability of MarginProbe® use for patients undergoing breast conservation. Further research is necessary to refine MarginProbe®'s specificity and to optimize its clinical application.

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BACKGROUND: Consensus guidelines recommend ≥ 2 mm margins in patients undergoing partial mastectomy (PM) for ductal carcinoma in situ (DCIS). It is unknown whether the number or proximity of margins less than 2 mm is associated with an increased mastectomy rate in patients attempting breast conservation therapy (BCT) for DCIS. The aim of this study is to examine this relationship. PATIENTS AND METHODS: An institutional database review identified 208 patients with DCIS who underwent PM at a tertiary referral center and community hospitals from July 2020 to June 2023. Patients with a history of breast cancer, previous surgery for breast cancer, ipsilateral invasive carcinoma, papillary carcinoma, Paget's disease, more lobular carcinoma in situ (LCIS) than DCIS present, initial mastectomy, no DCIS present, routine shave margins (of all vectors), and ≥ 2 mm margins of all six vectors were excluded. Selective intraoperative margin re-excisions were included. RESULTS: A total of 208 patients who met inclusion criteria were retrospectively reviewed. 122 (25%) had one close/positive (< 2 mm) margin and 86 (18%) had two or more close/positive margins. Of the patients with one close/positive margin, 7% (9/122) eventually underwent mastectomy. Of the patients with two or more close/positive margins, 20% (17/86) eventually underwent mastectomy. Overall, no patients with opposing margins underwent mastectomy. CONCLUSIONS: Patients undergoing PM for DCIS have a mastectomy rate that is increased threefold, with two or more close/positive margins at initial PM, when compared with those with only one close/positive margin. The presence of opposing close/positive margins at initial PM did not increase the mastectomy rate and most were cleared with re-excision.

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Achieving clear resection margins at the time of lumpectomy is essential for optimal patient outcomes. Margin status is traditionally determined by pathologic evaluation of the specimen and often is difficult or impossible for the surgeon to definitively know at the time of surgery, resulting in the need for re-operation to obtain clear surgical margins. Numerous techniques have been investigated to enhance the accuracy of intraoperative margin and are reviewed in this manuscript.

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Adenomyoepitheliomas of the breast are rare tumors that are characterized histologically as having both epithelial and myoepithelial components. While adenomyoepitheliomas are considered benign lesions, existing literature supports their potential for malignant transformation. These tumors also exhibit nonspecific and variable findings on noninvasive imaging, posing additional challenges in management. We present a rare case of an adenomyoepithelioma diagnosed in a 65-year-old female who was treated with surgical resection of her tumor, with histopathology negative for malignant transformation. By describing this patient's management course, we aim to contribute to existing literature analyzing adenomyoepitheliomas and help guide future treatment.

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BACKGROUND: The effect of lumpectomy defect repair (a level 1 oncoplastic technique) on patient-reported breast satisfaction among patients undergoing lumpectomy has not yet been investigated. METHODS: Patients undergoing lumpectomy at our institution between 2018 and 2020 with or without repair of their lumpectomy defect during index operation, comprised our study population. The BREAST-Q quality-of-life questionnaire was administered preoperatively, and at 6 months, 1 year, and 2 years postoperatively. Satisfaction and quality-of-life domains were compared between those who did and did not have closure of their lumpectomy defect, and compared with surgeon-reported outcomes. RESULTS: A total of 487 patients met eligibility criteria, 206 (42%) had their partial mastectomy defect repaired by glandular displacement. Median breast volume, as calculated from the mammogram, was smaller in patients undergoing defect closure (826 cm3 vs. 895 cm3, p = 0.006). There were no statistically significant differences in satisfaction with breasts (SABTR), physical well-being of the chest (PWB-CHEST), or psychosocial well-being (PsychWB) scores between the two cohorts at any time point. While patients undergoing defect closure had significantly higher sexual well-being (SexWB) scores compared with no closure (66 vs. 59, p = 0.021), there were no predictors of improvement in SexWB scores over time on multivariable analysis. Patients' self-reported scores positively correlated with physician-reported outcomes. CONCLUSIONS: Despite a larger lumpectomy-to-breast volume ratio among patients undergoing defect repair, satisfaction was equivalent among those whose defects were or were not repaired at 2 years postsurgery. Defect repair was associated with clinically relevant improvement in patient-reported sexual well-being.

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INTRODUCTION: Oncoplastic surgery is an important component of the management of breast cancer. As prognosis has improved, the need for proficient techniques to achieve disease eradication while maintaining cosmesis for naturally appearing breasts has gained importance. This study describes an easy-to-learn modified oncoplastic technique for patients undergoing breast-conserving treatment. DESCRIPTION OF THE TECHNIQUE: Tumor resection is performed through different peri-areolar, inframammary, or radial incisions. To reduce the size of the surgical defect created after tissue resection, an internal purse-string is performed parallel to the chest wall or base of the wound with subsequent staggering in three or more layers as needed, while maintaining the parallel orientation of the needle. This is followed by the creation and overlapping of internal breast tissue flaps that are rearranged to decrease the dead space with the aim of improving cosmesis. The redundant skin is removed for the skin envelope to maintain shape. The wound is closed in layers. We also describe steps in performing sentinel lymph node and tumor extraction through the same periareolar, inframammary, or radial incisions for tumors located in outer quadrants. Following closure, contour and projection of the breast were maintained without indentation or loss of projection, with a symmetrical appearance to the contralateral side. CONCLUSION: This simplified oncoplastic (MOLLER) technique can be easily learned and used by surgeons who treat cancer patients and have limited oncoplastic training. It uses basic known surgical principles to decrease the size of the defect created while minimizing the need for larger incisions/pedicles.

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Clear-cell hidradenocarcinomas are extremely uncommon sweat gland tumors with a predilection for the head and neck. In the limited number of articles reporting breast involvement, the primary focus concerns this entity's histological and immunohistochemical characteristics. Since hidradenocarcinomas of the breast have the potential to resemble a primary breast carcinoma closely, diagnosis may be challenging. Therefore, the authors report the first case of hidradenocarcinoma of the breast, which features its macroscopic morphology. In addition, to increase physicians' awareness of this rare neoplasm, the article also aims to detail its surgical approach.

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Lymphoepithelial carcinoma of the breast (LELC) is a rarely encountered form of breast carcinoma, and there is limited information treatment for this entity. We present a case of a 55-year-old postmenopausal female presenting with a left breast mass on screening mammogram with core needle biopsy showing lymphoepithelial carcinoma. The patient was treated with surgical resection of the mass and sentinel lymph node biopsy, followed by adjuvant chemotherapy and radiation. Given the rarity of this type of breast carcinoma, our case study continues to add to the treatment considerations in the literature, specifically the role of sentinel lymph node.

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INTRODUCTION: Oncoplastic surgery (OPS) is a form of breast conservation surgery involving partial mastectomy followed by volume displacement or replacement surgery. As the field of OPS is growing, we sought to determine if there was a learning curve to this surgery. METHODS: A retrospective chart review was conducted of all patients who underwent OPS over a 6-year period with a single surgeon formally trained in both Plastic Surgery and Breast Oncology. Cumulative summation analysis (CUSUM) was performed on mean operative time to generate the learning curve and learning curve phases. Outcomes were compared between phases to determine significance. RESULTS: Mean operative time decreased significantly across the 6-year period, generating three distinct learning curve phases: Learner phase (cases 1-23), Competence phase (24-73), and Mastery phase (74 and greater). The overall positive margin rate was 10.9% and there was no significant difference in rates between phases (p = 0.49). Overall complication rates, reoperation rates, and locoregional recurrence remained the same across all phases (p = 0.16; p = 0.65; p = 0.41). The rate of partial nipple loss decreased between phases (p = 0.02). CONCLUSION: As with many complex operations, there does appear to be a learning curve with OPS, as the operative time and the rates of partial nipple loss decreased over time.

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BACKGROUND: Breast cancer patients suffer from lowered quality of life (QoL) after surgery. Breast conservancy surgery (BCS) such as partial mastectomy is being practiced and studied as an alternative to solve this problem. This study confirmed breast tissue reconstruction in a pig model by fabricating a 3-dimensional (3D) printed Polycaprolactone spherical scaffold (PCL ball) to fit the tissue resected after partial mastectomy. METHODS: A 3D printed Polycaprolactone spherical scaffold with a structure that can help adipose tissue regeneration was produced using computer-aided design (CAD). A physical property test was conducted for optimization. In order to enhance biocompatibility, collagen coating was applied and a comparative study was conducted for 3 months in a partial mastectomy pig model. RESULTS: In order to identify adipose tissue and fibroglandular tissue, which mainly constitute breast tissue, the degree of adipose tissue and collagen regeneration was confirmed in a pig model after 3 months. As a result, it was confirmed that a lot of adipose tissue was regenerated in the PCL ball, whereas more collagen was regenerated in the collagen-coated Polycaprolactone spherical scaffold (PCL-COL ball). In addition, as a result of confirming the expression levels of TNF-a and IL-6, it was confirmed that PCL ball showed higher levels than PCL-COL ball. CONCLUSION: Through this study, we were able to confirm the regeneration of adipose tissue through a 3-dimensional structure in a pig model. Studies were conducted on medium and large-sized animal models for the final purpose of clinical use and reconstruction of human breast tissue, and the possibility was confirmed.

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INTRODUCTION: Oncoplastic surgery (OPS) is traditionally performed using a dual surgeon (DS) approach that involves both a breast surgeon and a plastic surgeon. It is also performed using a single surgeon (SS) approach with a surgeon trained in both breast surgical oncology and plastic surgery. We sought to determine if outcomes differed between SS versus DS OPS approaches. METHODS: A retrospective chart review was conducted of all OPS performed in a single health system over a 6-y period by either an SS or a DS approach. Primary outcomes were rates of positive margins and the overall complication rate; secondary outcomes were loco-regional recurrence, disease-free survival, and overall survival. RESULTS: A total of 217 patients were identified; 117 were SS cases and 100 were DS cases. Baseline preoperative patient characteristics were similar between the two groups as there was no difference in mean Charlson Comorbidity Index scores (P = 0.07). There was no difference in tumor stage (P = 0.09) or nodal status (P = 0.31). Rates of positive margins were not significantly different (10.9% (SS) versus 9% (DS); P = 0.81), nor were rates of complications (11.1% (SS) versus 15% (DS); P = 0.42). Rates of locoregional recurrence were also not significantly different (1.7% (SS) versus 0% (DS); P = 0.5). Disease-free survival and overall survival were not significantly different at 1-y, 3-y, and 5-y time points (P = 0.20 and P = 0.23, respectively) although follow-up time was not sufficient for definitive analysis regarding survival. CONCLUSIONS: Both SS and DS approaches to OPS have similar outcomes with regards to positive margin rates and surgical complication rates and are comparably safe.

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Partial breast reconstruction using oncoplastic techniques is performed at the time of lumpectomy and includes volume replacement techniques such as flaps and volume displacement techniques such as reduction and mastopexy. These techniques are used to preserve breast shape, contour, size, symmetry, inframammary fold position, and position of the nipple-areolar complex. Newer techniques such as auto-augmentation flaps and perforator flaps continue to broaden options and newer radiation therapy protocols will hopefully reduce side effects. Options for the oncoplastic approach now include higher risk patients as there is a larger repository of data on the safety and efficacy of this technique.

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BACKGROUND AND OBJECTIVES: Understanding racial disparity is crucial to addressing health equity and access to care. Our study aims to examine racial differences in breast conserving surgery (BCS) utilization rates and determine how these rates have changed over time. METHODS: This retrospective cohort analysis utilized the NSQIP database to identify women diagnosed with breast cancer who underwent BCS procedures between 2008 and 2019. Racial utilization trends were analyzed using a Cochran-Armitage test and Index of Disparity analysis. RESULTS: In the 12-year period, 202 492 women underwent a breast cancer surgery, of which 47% underwent BCS. Within the BCS subgroup, oncoplastic surgery utilization increased from 3% to 10%, leading to a declining proportion of partial mastectomies: 97% to 90.0% (both p < 0.01). The racial index of disparity for overall BCS patients decreased from 7% to 6%, remained unchanged (1%) for partial mastectomies, and significantly decreased in oncoplastics (23%-7.6%). CONCLUSION: BCS represents a mainstay option for early-staged breast cancer interventions, this study demonstrate promising progress in decreasing the index of disparity among races and persistent racial inequalities.

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As breast conserving surgery increases in the surgical treatment of breast cancer, partial mastectomy is also increasing. Polycaprolactone (PCL) is a polymer that is used as an artifact in various parts of the human body based on the biocompatibility and mechanical properties of PCL. Here, we hypothesized that a PCL scaffold can be utilized for the restoration of breast tissue after a partial mastectomy. To demonstrate the hypothesis, a PCL scaffold was fabricated by 3D printing and three types of spherical PCL scaffold including PCL scaffold, PCL scaffold with collagen, and the PCL scaffold with breast tissue fragment were implanted in the rat breast defect model. After 6 months of implantation, the restoration of breast tissue was observed in the PCL scaffold and the expression of collagen in the PCL scaffold with collagen was seen. The expression of TNF-α was significantly increased in the PCL scaffold, but the expression of IL-6 showed no significant difference in all groups. Through this, it showed the possibility of using it as a method to conveniently repair tissue defects after partial mastectomy of the human body.

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PURPOSE: Adenoid cystic carcinoma of the breast (ACCB) is a rare malignancy with a favorable prognosis. Little information exists regarding the impact of postoperative radiation therapy (RT) on survival outcome in patients with ACCB. This study aimed to evaluate the clinical significance of postoperative RT in ACCB. METHODS: Data of patients with ACCB were extracted from the Surveillance, Epidemiology, and End Results database (2000-2019). Univariate and multivariable Cox regression analyses were performed to identify prognostic factors. In addition, a nomogram model was constructed and internally validated for discrimination and calibration. The value of postoperative RT was respectively accessed in each risk subgroup according to nomogram-deduced individualized score. RESULTS: A total of 689 eligible patients were included in the analysis. Partial mastectomy was associated with an increased risk of death compared with partial mastectomy plus postoperative RT (P = 0.020), but total mastectomy with or without postoperative RT was comparable (P = 0.624). Then, in-depth analysis was performed for patients receiving breast-conserving therapy (n = 485, the training set vs. the testing set = 340 vs. 145). Age at diagnosis, histological grade, and T stage were identified as prognostic factors for overall survival (OS) (All P < 0.05). A nomogram was constructed to provide predictive accuracy toward individual OS rates of ACCB and to divide patients into different risk subgroups. Notably, compared with non-RT, postoperative RT significantly improved OS in the high-risk subgroup (P = 0.006 for the training set, and P = 0.013 for the overall population) but not in the low-risk subgroup (P = 0.807 for the training set, and P = 0.293 for the overall population), suggesting that these patients may be able to exempt from postoperative RT. CONCLUSION: A robust and effective nomogram was developed to predict prognosis and assist in treatment decisions in patients with ACCB undergoing partial mastectomy.

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BACKGROUND: We conducted a prospective cohort study to evaluate effective techniques for breast reconstruction after partial mastectomy due to breast cancer. Determining the method of reconstruction is often difficult as it depends on the location of the cancer and the amount of tissue excised.. Here, we present a new technique, using the vertical latissimus dorsi (LD) flap, that can be used in all partial mastectomies and can almost conceal scarring. We also compared these results to those of the mini LD flap. METHODS: We analyzed the data of a total of 50 and 47 patients, who underwent breast reconstruction with the mini LD flap and the vertical LD flap, respectively. Immediately after tumor excision, breast reconstruction was initiated. The skin flap for vertical LD was designed in a planarian shape, such that it may be hidden as much as possible and minimize bulging during closure, and the LD muscle flap was designed with a sufficient distance in the inferior direction. RESULTS: Our finding showed that the vertical LD flap group required significantly less total operation time than the mini LD flap group. While the mini-LD flap resulted in a scar that was difficult to conceal, the donor site scar of the vertical LD flap could not be seen easily, and no scar was visible on the back. CONCLUSIONS: The vertical LD flap is useful for partial breast reconstruction, in all breast regions requires a rather small volume of the flap. Moreover, recovery was relatively fast with high patient satisfaction.

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We examined the effects of the COVID-19 pandemic on the screening, diagnosis and treatment of breast cancer in Hungary based on administrative data until June 2021, covering three pandemic waves. After correcting for trend and seasonality, the number of mammography examinations decreased by 68% in 2020q2, was around its usual level in 2020q3 and was reduced by 20-35% throughout 2020q4-2021q2. The reduction was caused by a combination of supply-side (temporary suspensions of screening) and demand-side (lower screening participation during the pandemic waves) factors. The number of new breast cancer diagnoses and mastectomy surgeries responded with a lag, and were below their usual level by 15-30% in all quarters between 2020q2 and 2021q2, apart from 2020q4, when there was no significant difference. Using a regression discontinuity framework, we found that the partial mastectomy rate (indicative of early diagnosis) dropped more substantially in 2020q2 in the 61-65 years old age group that was just below the age cut-off of organized screening than in the 66-70 years old age group, and this difference was partially offset in 2021q1. We suggest that policymakers need to motivate the target population (by providing both information and incentives) to catch up on missed screenings.

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As rates of total mastectomy rise, the relationships between surgery modality with domains of health-related quality of life is not well understood. This study reports differences in depression, anxiety, pain, and health status among a cohort of women scheduled to receive total mastectomy or breast-conserving surgery. Patient-reported outcomes measured preoperative differences between patients receiving total mastectomy or breast-conserving surgery in a cross-sectional design. Regression analyses was used to model health outcomes and adjust for patient demographics on patient measures. Participants scheduled for total mastectomy were more likely to report more severe symptoms of depression and anxiety. This association was non-significant after adjusting for demographic differences. Younger participants were more likely to be scheduled for total mastectomy. Age was negatively associated with symptoms of depression and anxiety. Screening patients for mental health symptoms may be particularly important among younger patients who were more likely to report depression and anxiety before their surgery and were more likely to receive total mastectomy.

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