Breast microbiota compositions are not well understood, and a few recent reports have begun to explore the correlation between breast tissue dysbiosis and cancer. Given that various methods for breast microbiota detection were used, the aim of the present paper was to clarify which hypervariable region of the 16S-rRNA gene (V2, V3, V4, V6 + 7, V8, and V9) is the most informative for breast tissue microbiota. Core needle biopsies (CNBs) were compared with surgical excision biopsies (SEBs) to find a less invasive form of recovery useful for the analysis of a larger statistical population and potentially for diagnostic use of breast tissue microbiota. Finally, this study was the first to analyse the breast microbiota of tumours and paired normal tissues of a Mediterranean population. Our findings showed that the V3 region is the most informative for breast tissue microbiota, accounting for 45% of all reads. No significant differences were found between CNB and SEB specimens in terms of total reads and numbers of Operational Taxonomic Units (OTUs). Moreover, we find that more similarities than differences exist between tumours and adjacent normal tissues. Finally, the presence of the Ralstonia genus is associated with breast tissue.

Conservative surgery has become a well-established alternative to mastectomy in the treatment of breast cancer. However, in case of larger lesions or small-size breasts, the removal of adequate volumes of breast tissue to achieve tumor-free margins and reduce the risk of local relapse may compromise the cosmetic outcome, causing unpleasant results. In order to address this issue, new surgical techniques, so-called oncoplastic techniques, have been introduced in recent years to optimize the efficacy of conservative surgery both in terms of local control and cosmetic results. This article discusses the indications, advantages, and limitations of these techniques and their results in terms of local recurrence and overall survival.

Background: The aim of this study was to compare outcomes of immediate prosthetic breast reconstruction (IPBR) using traditional submuscular (SM) positioning of implants versus prepectoral (PP) positioning of micropolyurethane-foam-coated implants (microthane) without further coverage. Methods: We retrospectively reviewed the medical records of breast cancer patients treated by nipple-sparing mastectomy (NSM) and IPBR in our institution during the two-year period from January 2018 to December 2019. Patients were divided into two groups based on the plane of implant placement: SM versus PP. Results: 177 patients who received IPBR after NSM were included in the study; implants were positioned in a SM plane in 95 patients and in a PP plane in 82 patients. The two cohorts were similar for mean age (44 years and 47 years in the SM and PP groups, respectively) and follow-up (20 months and 16 months, respectively). The mean operative time was 70 min shorter in the PP group. No significant differences were observed in length of hospital stay or overall major complication rates. Statistically significant advantages were observed in the PP group in terms of aesthetic results, chronic pain, shoulder dysfunction, and skin sensibility (p < 0.05), as well as a trend of better outcomes for sports activity and sexual/relationship life. Cost analysis revealed that PP-IPBR was also economically advantageous over SM-IPBR. Conclusions: Our preliminary experience seems to confirm that PP positioning of a polyurethane-coated implant is a safe, reliable and effective method to perform IPBR after NSM.

Background: The inverted-T skin-reducing mastectomy with implant reconstruction represents a very effective reconstructive and cosmetic option in patients with macromastia. However, in this subset of patients, the risk of skin flap necrosis, especially at the T-junction, is significant. In this setting, complete implant coverage with viable tissue beneath the mastectomy skin flaps is essential to reduce morbidity. In this article, the authors retrospectively review their series of 16 skin-reducing mastectomy and immediate one-stage implant reconstructions using the submuscular-subfascial pocket, analyzing the reconstructive issues and cosmetic outcomes. Methods: Between June of 2008 and August of 2010, 14 women underwent skin-reducing mastectomy with immediate implant reconstruction using definitive anatomical gel implants, totalling 16 breasts. Reconstructive evaluation methods were clinically and photography-based assessment. The BREAST-Q was used to quantify patient satisfaction. Results: The average follow-up time was 18.6 months (range, 6 to 36 months). The average implant volume was 416.5 cc (range, 300 to 500 cc). The reconstructive outcomes were excellent to good, with patient satisfaction ranking high to very high, except in two patients who experienced skin necrosis (14.3 percent). Conclusions: The authors' series suggests that skin-reducing mastectomy with immediate implant reconstruction can be easily and safely performed when an appropriate conservative skin-reducing mastectomy pattern is designed, providing complete autologous implant coverage with the submuscular-subfascial pocket. However, further studies are needed to enhance patient selection and reduce the complication rate. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, IV.