Various surgical approaches and pedicles have been described to ensure safe and satisfactory results in reduction mammaplasty. Although different breasts require different techniques, complications are common. This study aims to assess the incidence of complications following primary bilateral reduction mammaplasties across a diverse range of pedicle methods within one of the largest single-center cohorts to date, utilizing machine learning methodologies. A retrospective review of primary bilateral reduction mammaplasties at a single surgical center between January 2016 and March 2020 was performed. Patient medical records and surgical details were reviewed. Complications were compared among three different pedicles. Binary recursive partitioning (CART) machine learning was employed to identify risk factors. In total, 1021 patients (2142 breasts) met the inclusion criteria. The superomedial pedicle was the most frequently utilized (48.0%), with an overall complication rate of 21%. While pedicle-based subgroups demonstrated significant demographic variance, overall complication rates differed most between the inferior (24.9%) and the superomedial pedicle (17.7%). Statistical analysis identified resection weight as the sole significant independent risk factor (OR 1.001, p = 0.007). The machine learning model revealed that total resection weights exceeding 1700 g significantly increased the risk of overall complications, while a sternal notch to nipple (SNN)-distance > 36.5 cm correlated with complications involving the nipple-areola complex (NAC). Higher resection weights are associated with elevated complication rates. Preoperative assessment utilizing SNN-distance can aid in predicting NAC complications.

BACKGROUND: Research in gender-affirming chest surgery has primarily compared cisgender versus transgender and gender-diverse (TGD) people, without specifically addressing nonbinary people. This study will assess surgical complications between cisgender, transgender, and nonbinary adults undergoing breast reductions.
METHODS: The National Surgical Quality Improvement Program databases from 2015 to 2021 were used to identify TGD patients who underwent breast reduction (Current Procedural Terminology code: 19318) and cisgender patients who underwent this procedure for cosmesis or cancer prophylaxis. Analysis of variance tests, chi-squared tests, unpaired t-tests, and regression models compared complications among cisgender, transgender, and nonbinary patients.
RESULTS: A total of 1222 patients met the inclusion criteria: 380 (31.1%) were cisgender, 769 (62.9%) were transgender, and 73 (6.0%) were nonbinary. The proportion of TGD patients grew significantly relative to cisgender patients over the study period (P < 0.001). The overall all-cause complication rate was 3.4%, with 4.2% of cisgender, 1.4% of nonbinary, and 3.1% of transgender patients experiencing surgical complications. After adjusting for confounding variables, no statistically significant difference was observed in all-cause complication rates between the cohorts. In the sample, 19 transgender patients (2.5%) underwent reoperation. Transgender patients had a lower likelihood of wound complications (odds ratio: 0.172; 95% confidence interval: 0.035-0.849; P = 0.031) compared to cisgender patients and nonbinary patients. None of the patients experienced a severe systemic complication.
CONCLUSIONS: The findings emphasize the growing demand and safety of gender-affirming breast reductions. They underscore the importance of continued research and tailored approaches to delivering care to nonbinary and transgender patients, addressing their diverse needs and improving access to gender-affirming surgeries.

BACKGROUND: Surgeons meticulously perform breast reductions, while ensuring vascular integrity of the pedicle and Nipple-Areolar complex (NAC) to prevent any complication. It is crucial to remember that loss of sensation is also substantial complication, mainly due to unique characteristic features of the NAC. This study aimed to compare early and long-term sensory results by performing topographic analysis of NAC sensation after superomedial pedicle breast reduction.
METHODS: A prospective study was conducted by including nonrandomized female patients who underwent breast reduction surgery with wise pattern excision superomedial pedicle technique between January 2019 and June 2022. Semmes-Weinstein Monofilament (SWM) test performed at preoperatively, 3-6 months and 15-18 months postoperatively. NAC complex was divided into four equal quadrants and nipple: superomedial (SM), inferomedial (IM), inferolateral (IL), superolateral (SL) and Nipple (N). Touch-Test® Sensory Evaluator Chart was used to evaluate sensory results.
RESULTS: None of the patients had any loss of sensation during preoperative SWM test. In postoperative 3-6 months, statistically significant differences were observed between N and SL (p = 0.002), SL and IM (p < 0.05), SM and IM (p < 0.05). In postoperative 15-18 months, there was no difference between the quadrants and nipple (p = 0.07). In early and long-term comparisons of the same quadrants, IL less pronounced than other quadrant comparisons (p = 0.034). A statistical difference was observed in overall NAC score (p < 0.05).
CONCLUSIONS: It would be beneficial to inform patients overall NAC sensation in the postoperative may not be as good as preoperative, there might be variations in NAC sensation across different quadrants in early period.
METHODS: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

BACKGROUND: Breast reduction surgery often concern women of childbearing age. However, it can interfere with the ability to breastfeed, whereas the benefits of breastfeeding are well known. Current data in the literature do not provide precise information on the possibilities of breastfeeding after breast reduction surgery.
OBJECTIVE: The aim of this study was to assess long-term breastfeeding ability of women after breast reduction performed in our centre.
METHODS: This is a retrospective comparative study including patients treated with breast reduction at Saint-Louis Hospital between 2010 and 2017 and who have had children before or after surgery. Operative details were retrieved from medical records and ability to breastfeed was assessed during a phone interview. Breastfeeding before surgery was compared to breastfeeding after surgery.
RESULTS: We analysed 21 births before and 35 births after breast reduction. Breastfeeding initiation was similar in the two groups (90% vs. 83%, P=0.7), but the median duration was significantly shorter after breast reduction compared with before (3 weeks vs. 10 weeks; P<0.01), the rate of breastfed child at 3 months was lower after surgery (11% vs. 43%; P<0.01), the use of infant formula was higher after surgery (100% vs. 74%, P<0.01), and we found a higher rate of discontinuation caused by hypogalactia (69% vs. 11%; P<0.001).
CONCLUSIONS: Breastfeeding is possible but more difficult to sustain over time after breast reduction. Patients need to be made aware of that before surgery, and patients who still want to breastfeed should be encouraged at the maternity.

BACKGROUND: Breast reduction surgery is a widely performed plastic surgery procedure. The incidence of such complications has been steadily decreasing in recent years but is still nonetheless 5.6%. The primary aim of this study was to analyze the incidence of the main postoperative complications of breast reduction surgery. In addition, we identified cause-and-effect links between complications and characteristics of the patients, such as smoking, age, weight resection, BMI, and wound drainage.
METHODS: This retrospective study was performed on a population of 1442 women who underwent breast reduction surgery between January 2016 and October 2022 in the plastic surgery unit at Saint-Louis Hospital, Paris, France. At the follow-up examination, we evaluated the patients for complications.
RESULTS: The average resection weight was 1297.7 g in a population for which the average BMI was 28.9. We found 19.9% rate of total complications, of which 3.5% were major complications. We found that only the resection weight was a risk factor for complications.
CONCLUSIONS: The main strength of our study is the size of our sample. The large number of patients allowed us to conduct numerous analyses and obtain significant results despite the rarity of certain events. This large cohort was also responsible for the high statistical power of our results.
CONCLUSIONS: The risk of developing a postoperative infection was 7.5% for resections of less than 2.4 kg, increasing to 13.9 % when greater than that. Thus, the administration of prophylactic antibiotic therapy to affected women to reduce the risk of infection is a distinct consideration. For the other factors, while none of them appeared to promote the occurrence of adverse events and, therefore, do not formally contraindicate breast reduction surgery, some preventive measures still strike us as being relevant, such as blade drainage, weight loss, diabetes control, and smoking cessation.
METHODS: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

BACKGROUND: Some risk factors for breast reduction complications are well known but for others the results are contradictory in scientific literature. The choice between superior pedicle and superomedial pedicle as a risk factor has been rarely studied. We aim to better identify the risk factors for breast reduction complications, including the choice between these two pedicles, in order to better prevent their occurrence.
METHODS: We performed a retrospective analysis of the medical records of patients who underwent a bilateral breast reduction from august 2020 to august 2023 in our center. Patient data were obtained and correlated with postoperative complications using statistical tests and a literature search was carried out to compare our results to the current evidence.
RESULTS: We included 216 patients. The complication rate was 24.07%. The most frequent complication was wound dehiscence (17.59%), followed by partial Nipple-Areola-Complex necrosis or peroperative suffering requiring conversion to Nipple-Areola-Complex free graft (5.56%). Increased Body Mass Index, superomedial pedicle and resection weight ≥650g were associated with an increased probability of complication occurrence (P=0.048, P=0.005 and P=0.044). The superomedial pedicle and the resection weight ≥650g were associated with an increased probability of wound dehiscence (P=0.005 and P=0.037). The difference between the preoperative and the postoperative Sternal-Notch-Nipple distance was associated with an increased probability of partial Nipple-Areola-Complex necrosis or Nipple-Areola-Complex free graft (P=0.014).
CONCLUSIONS: Correcting modifiable preoperative risk factors and mastering both techniques, enabling the surgeon to choose the one best suited to each patient\'s clinical situation, reduces the complication rate.

Level of Evidence V This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

BACKGROUND: Symptomatic breast hypertrophy affects the quality of life of a large number of women globally. Many reduction mammoplasty techniques have been described for patients with breast hypertrophy. The aim of this study was to provide our clinic\'s experience in utilizing the modified superomedial pedicle breast reduction technique in specific patients suffering from breast hypertrophy, with sternal notch-to-nipple distance of more than 33 cm.
METHODS: Our study included twenty patients who underwent, from January 2022 to December 2023, the modified superomedial pedicle breast reduction technique due to symptomatic breast hypertrophy with sternal notch-to-nipple distance of more than 33 cm in the Plastic and Reconstructive Surgery Department at Nicosia General Hospital in Cyprus. Patient demographics, comorbidities, pre- and postoperative breast anthropometric measurements and surgical complications were recorded and analyzed.
RESULTS: The average age at the time of the reduction was 48 years. The mean preoperative body mass index was 28.52 kg/m2. Patients\' comorbidities included one (5%) patient with diabetes, seven (35%) with obesity and three (15%) with hypertension. The mean preoperative sternal notch-to-nipple distance was 35.25 cm for the right breast and 34.90 cm for the left breast, while the mean postoperative was 20.65 cm for both breasts. The total mean resection weight of both breasts was 1643.45 g. Surgical complications were minor including two (10%) cases of local hematoma and one (5%) case of T-Junction wound breakdown. All patients were relieved from their preoperative symptoms and were satisfied with the final result.
CONCLUSIONS: Our modified superomedial pedicle technique is a safe, effective and versatile pedicle to be used with many advantages, in specific patients suffering from breast hypertrophy with sternal notch-to-nipple distance of more than 33 cm, including its shape and rotational abilities, viability of the nipple and excellent outcome of glandular plication and breast reshaping.
METHODS: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Breastfeeding has been widely encouraged by health care systems for many years. Breast reduction or mastopexy, are very frequent procedures often performed on young women. The main objective of this study is to evaluate the impact of breast surgery on breastfeeding by comparing the success rate of breastfeeding in operated women versus unoperated women. Secondary objectives are to evaluate the breastfeeding success rate according to the surgical technique or the weight resected. A retrospective comparative study was conducted. Women of childbearing age who underwent breast reduction surgery or mastopexy at Henri-Mondor Hospital were contacted to answer a questionnaire about their pregnancies. Two hundred nine patients answered and two groups of patients were constituted, a preoperative group of 104 women who had a pregnancy before surgery and a postoperative group formed by 61 women who had a pregnancy after surgery. Breastfeeding success rate was 82% in the preoperative group versus 41% in the postoperative group. A statistically significant difference was found on the success rate of breastfeeding, as well as the rate of exclusive breastfeeding, with significantly lower rates in the postoperative group. In contrast, there was no significant difference between the different pedicles used, neither according to the weight of the resected gland. The cause of failure in the postoperative group was in most cases insufficient milk. Breast reduction surgery or mastopexy seems to have negative impact on the ability of operated women to breastfeed. This impact is multifactorial so these results should be interpreted with caution and further studies are needed to improve the management of these patients.

OBJECTIVE: The choice of pedicle in reduction mammaplasty is highly variable with prior studies demonstrating high patient satisfaction in most cases. This study aimed to examine the impact of pedicle type on clinical and patient-reported outcomes in patients undergoing reduction mammaplasty.
METHODS: A total of 588 patients underwent bilateral reduction mammaplasty with Wise pattern or modified Robertson incision by 13 surgeons at a single institution. Clinical outcomes were compared according to the pedicle type in all patients and BREAST-Q responders (32% response rate). Survey respondents were sub-grouped by resection volume, and the BREAST-Q satisfaction scores were compared.
RESULTS: Among all included reduction mammoplasties, 439 (75%) were performed using inferior pedicles, and 149 (25%) using superior or superomedial pedicles. Responders and non-responders were similar in preoperative characteristics including age, body measurements, and comorbidities. Although a higher incidence of infection occurred among the responders, clinical outcomes were comparable across all pedicle types. A total of 187 patients completed the BREAST-Q. Compared to the superior pedicle group, respondents in the inferior pedicle group reported higher nipple satisfaction, even when adjusted for resection weight over 500 g. In contrast, the superior pedicle group had better sexual well-being scores, which persisted in resection weight less than 500 g (all p values <0.05).
CONCLUSIONS: Inferior pedicles were associated with greater nipple satisfaction and superior pedicles were associated with greater sexual satisfaction. Our findings suggest that those with resections less than 500 g were more satisfied with superior pedicles whereas those with greater resections were more satisfied with inferior pedicles.