Comparing Oncoplastic Breast Conserving Surgery with Mastectomy and Immediate Breast Reconstruction: Case-Matched Patient Reported Outcomes

Summary Background Oncoplastic breast conserving surgery (OBCS) allows women who may otherwise have mastectomy and immediate reconstruction (MxIR) the choice to conserve their breast yet avoid deformity. We compared the outcome of these options. Methods Two cohorts meeting study criteria were identified from prospectively audited series of women undergoing OBCS or MxIR. After case matching for age, tumour size and date of surgery, stratification by breast size, and controlling for radiotherapy; Body Image Scale (BIS) Scores of psychosocial function, and Patient Reported Outcome Measures (PROMs) for breast appearance and return to function were analysed. Results 567 women (286 treated by OBCS and 281 by MxIR) fulfilled inclusion criteria. Demographics were similar between the two unmatched cohorts, except for radiotherapy, age, and tumour size (all p < 0.001). Overall, BIS Score (p=0.002), self-rated breast appearance, return to work and function (all p