Refinements in Gender-Affirming Feminizing Chest Surgery.

Background: Feminizing top surgery, or mammaplasty augmentation, has multiple variables that surgeons can adjust to work synergistically with patient anatomy including plane of implant placement, pocket size, and inframammary fold (IMF) location. In the gender diverse population receiving this procedure to reduce symptoms of gender dysphoria, surgeons should be aware of differing anatomy and surgical approaches for feminizing top surgery.

Methods: A retrospective chart review was conducted using our institution's electronic health record between December 2019 and May 2023 with a minimum follow up period of 12 months. Inclusion criteria included transgender women, nonbinary patients, and all patients who did not identify as cis-gender women and who underwent feminizing top surgery. Demographic data including age, race, ethnicity, and gender were collected. Complication rates were recorded for hematoma, infection, seroma, wound dehiscence, hypertrophic scar, minor contour abnormalities, implant asymmetry, and revision surgery.

Results: Our surgeons' subfascial approach, which uses 2 equations to calculate dissection pocket dimensions and determine placement of pocket and incision based on desired implant base diameter and projection, was performed on 140 gender-diverse patients and resulted in a hematoma rate of 4.29%, an infection rate of 2.86%, and a seroma rate of 1.42% with good cosmetic outcomes, as evidenced by our low rates of minor contour abnormalities (5.71%) and implant asymmetry (1.43%). Only 5 patients (3.57%) required revision surgery.

Conclusions: Bilateral breast augmentation with round implants in a subfascial plane using a concealed IMF incision following equations to determine the dissection pocket size and new IMF position and incision position is a reproducible technique that results in good aesthetic outcomes and minimizes complications.