Abstract

This study aimed to compare the clinical and patient-reported outcomes of level II oncoplastic breast-conserving surgery (BCS) versus conventional BCS in breast cancer treatment, focusing on re-excision rates, early postoperative complications, and quality of life (QoL). This retrospective cohort study included 395 patients who underwent either conventional BCS (n=255) or level II oncoplastic BCS (n=140) at a tertiary academic center between January 2021 and June 2024. Demographic, clinicopathological, surgical, and postoperative data were extracted from the institutional database. Patient-reported outcomes were assessed using BREAST-Q scores in a subset of patients. The mean age did not differ significantly between groups (p=0.13). Reexcision was required in 22% of the conventional BCS group and 5% of the oncoplastic BCS group (p20 mm and multifocal disease were independent predictors of re-excision, while oncoplastic BCS was protective (p

Key words: Breast cancer, oncoplastic surgery, re-excision, breast-conserving surgery, quality of life