Oncoplastic mammaplasty with geometric compensation--a technique for breast conservation.

[OBJECTIVE] To describe a technique of oncoplastic mammaplasty, referred to as geometric compensation, which is suitable for tumors close to the skin in areas not included in the classic preoperative drawings for mammaplasty.

[MATERIALS AND METHODS] Seventeen patients with malignant tumors were included. Preoperative markings followed the "Wise-pattern" technique. The resection of affected skin was geometrically compensated with another area of preserved skin.

[RESULTS] The mean age of the patients was 52.88 ± 12.14 years. Mean pathological tumor size was 43.82 ± 31.39 mm. There were 7 (41.18%) locally advanced tumors. Six patients (35.29%) were submitted to neoadjuvant and the remainder to adjuvant chemotherapy. Radiotherapy was indicated in all cases. Fifteen patients (88.24%) received hormone therapy. Ptosis was corrected in all cases. The aesthetic result was rated excellent in seven cases (41.18%), good in 7 (41.18%), and fair in three cases (17.65%). Surgical margins were free. A seroma developed in one case (5.88%), small fat necrosis in three (17.65%), and enlarged scar in one (5.88%). There were no recurrences within 28.24 ± 18.02 months.

[CONCLUSIONS] The technique allowed breast conservation in situations requiring large resection of affected skin, with free surgical margins, correction of ptosis, satisfactory symmetry, and few complications.