In this article, the development of the female breast, as well as the functional anatomy, blood supply, innervation and lymphatic drainage are described. A thorough understanding of the breast anatomy is an important adjunct to a meticulous clinical breast examination. Breast examination is a complex skill involving key maneuvers, including careful inspection and palpation. Clinical breast examination can provide an opportunity for the clinician to educate patients about their breast and about breast cancer, its symptoms, risk factors, early detection, and normal breast composition, and specifically variability. Clinical breast examination can help to detect some cancers not found by mammography, and clinicians should not override their examination findings if imaging is not supportive of the physical findings.

Objective: Single-center studies have demonstrated that resection of cavity shave margins (CSM) halves the rate of positive margins and re-excision in breast cancer patients undergoing partial mastectomy (PM). We sought to determine if these findings were externally generalizable across practice settings. Methods: In this multicenter randomized controlled trial occurring in 9 centers across the United States, stage 0–III breast cancer patients undergoing PM were randomly assigned to either have resection of CSM (“shave” group) or not (“no shave” group). Randomization occurred intraoperatively, after the surgeon had completed their standard PM. Primary outcome measures were positive margin and re-excision rates. Results: Between July 28, 2016 and April 13, 2018, 400 patients were enrolled in this trial. Four patients (2 in each arm) did not meet inclusion criteria after randomization, leaving 396 patients for analysis: 196 in the “shave” group and 200 to the “no shave” group. Median patient age was 65 years (range; 29–94). Groups were well matched at baseline for demographic and clinicopathologic factors. Prior to randomization, positive margin rates were similar in the “shave” and “no shave” groups (76/196 (38.8%) vs. 72/200 (36.0%), respectively, P = 0.604). After randomization, those in the “shave” group were significantly less likely than those in the “no shave” group to have positive margins (19/196 (9.7%) vs. 72/200 (36.0%), P < 0.001), and to require re-excision or mastectomy for margin clearance (17/196 (8.7%) vs. 47/200 (23.5%), P < 0.001). Conclusion: Resection of CSM significantly reduces positive margin and re-excision rates in patients undergoing PM.

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Background: Nipple-sparing mastectomies are increasingly offered to women with breast cancer given the evidence for oncologic safety and improved cosmetic outcomes. Women with significant ptosis are often excluded due to potential nipple malposition and increased risk of nipple ischemia. The use of a harvested free nipple graft may allow women with ptosis to conserve their nipple -areolar complex. Methods: This is an IRB approved retrospective study of breast cancer patients at an academic center with ptosis who underwent free-nipple graft mastectomies with a single plastic surgeon and 5 dedicated breast surgeons from 2014-2017. The primary outcomes were free nipple graft viability and the need for revision. Secondary outcomes included post-operative complications. Results: Fourteen women with ptosis underwent skin and nipple-sparing mastectomy with breast reconstruction involving use of harvested free-nipple graft. More than half of the women were diagnosed with early-stage invasive breast cancer (42% stage 1, 14% stage 2). Four women underwent mastectomy for prophylaxis or other benign reasons. All of the women had significant ptosis during the pre-operative evaluation (57% grade 2 ptosis, 36% grade 3 ptosis, and 7% uncategorized), with an average BMI of 30. None were active smokers. In the postoperative period, one had partial nipple necrosis in combination with skin flap necrosis and positive margin (7%). Other complications included infection (14%) and hypopigmentation (14%). All nipples lost sensation and full projection. Conclusions: This is a novel approach using a free nipple graft with a skin envelope reducing mastectomy and immediate expander-based reconstruction. This successful approach allows women with ptosis to undergo nipple-sparing mastectomy with preservation of the nipple -areolar complex.