Scarless Donor Site for Breast Reconstruction by Endoscopically Assisted Extended Latissimus Dorsi Flap plus Lipofilling

Background:Breast reconstruction using endoscopically assisted latissimus dorsi (LD) flap leaves no scar on the back; however, the small amount of tissue obtained makes this procedure less practical. This study aimed to propose a new technique of endoscopically assisted extended LD (eeLD) flap plus lipofilling, which could secure a large breast volume. Methods:Lateral thoracic adipose tissues supplied by the thoracodorsal artery branches and the LD muscle were elevated as a single unit only through the mastectomy scar and three ports through the lateral chest. Furthermore, fat was simultaneously injected to support the volume and shape of the breast. Changes in the volume of the reconstructed breast over time were measured using three-dimensional stereophotogrammetry. Results:Overall, 15 breasts of 14 patients who underwent breast reconstruction using an eeLD flap exhibited no serious complications. On average, 281.9 +/- 32.4 g of flap and 74.7 +/- 19.4 mL of lipofilling were used. Within 8 weeks after the procedure, the volume of the reconstructed breast decreased to 69.5 +/- 7.5% and then plateaued. Seven patients needed a subsequent session of lipofilling to acquire adequate breast volume and projection. Notably, according to the BREAST-Q back scores, patients who underwent eeLD flap surgery were significantly more satisfied than those who underwent conventional LD musculocutaneous flap surgery using a skin paddle on the back at the same institution (82.8 +/- 9.2 versus 62.6 +/- 6.3; P < 0.0001). Conclusion:Despite the limitations in volume, eeLD flap plus lipofilling is advantageous because it does not leave a noticeable donor-site scar. CLINICAL QUESTION/LEVEL OF EVIDENCE:Therapeutic, IV.