Oncologic and Aesthetic Outcomes of Matrix Rotation Mammoplasty in Management of Upper Inner Quadrant Breast Cancer: A Single Centre Experience.

Oncoplastic techniques in breast cancer therapy allow for extending the indications of breast-conservative surgery plus improving cosmetic outcomes. Breast tumours located at the upper inner quadrant particularly represent a challenge for conservative surgery due to the scarcity of breast tissue and the risk of skin involvement. We present a "matrix rotation advancement" flap for breast-conserving surgery in patients with breast tumours at this location. This retrospective observational study analyzed 15 patients who underwent breast-conserving surgery with matrix rotation mammaplasty. All patients were treated in our tertiary oncology centre. The median age at diagnosis was 49 years. The average initial tumour size was 5.2 cm, and the mean excised breast weight was 105 g. Patients required neither symmetrization nor repositioning of the nipple-areola complex. Only two patients had a minor complication (wound dehiscence). During follow-up, no local recurrences were reported. We conclude that the matrix rotation flap is a safe and effective technique to treat tumours at this difficult location. It provides adequate oncological margins, accepted cosmetic results, and contralateral symmetry, with complication rates like those of standard conservative surgery.