Bilobed lateral artery perforator-based flap for partial breast reconstruction - Technique description and results from a ten-year cohort.

Introduction: We present a new technique, the bilobed lateral artery perforator-based flap, for breast-conserving surgery of large central tumors or nearby, combining Zymany's bilobed flap and a Lateral Intercostal Perforator (LICAP) flap, and its 10-year outcomes.

Materials and methods: We studied 37 patients with malignant breast tumors near or involving the central skin, without ptosis or desire to correct it, who avoided mastectomy with this modified bilobed flap from 2013 to 2022. The same surgeon operated on them in different institutions. This research project was approved by our ethical committee (n. 2.322.212).

Results: The mean age was 57.17 (±12.60) years. The mean specimen weight was 74.32 (±25.84)g, and the mean tumor size was 40.35 (±15.81) mm. Fourteen (37.84 %) tumors were larger than 5 cm and one was multicentric. Thirty-two (86.49 %) patients had invasive ductal carcinomas. Nipple areola complex was removed in 19 (51.35 %) cases due to clinical involvement, and immediately reconstructed in two cases with contralateral free grafting. Twenty-one (56.76 %) patients received neoadjuvant chemotherapy. Three (8.11 %) patients had immediate contralateral mastopexy. Radiotherapy was indicated in all cases. There were 3 (8.11 %) minor complications, one positive margin, and no surgical revisions. In a mean follow-up of 39.97 (±29.43) months, there were no local recurrences, 2 metastasis, and one death. Satisfaction and aesthetic results were good or excellent in most cases.

Conclusions: The new technique enabled breast conservation, with high rates of free margins, high levels of satisfaction, few complications in women with large central tumors on small breasts with limited ptosis.