Timing of radiation therapy in nipple-sparing mastectomy influences outcomes and patient-reported quality of life.

The aim of this study is to assess the complication profile and impact on patient-reported quality of life in those undergoing nipple-sparing mastectomy (NSM) with immediate breast reconstruction and subsequent prosthetic reconstruction in patients with prior breast radiation therapy (pRT) vs those receiving adjuvant post-mastectomy radiation therapy (PMRT). An IRB-approved, retrospective analysis was performed from 2002 to 2014 to identify NSM patients that underwent pRT or PMRT. A 22-item Likert scale questionnaire was administered by a third party to register patient-reported quality of life. Forty patients met criteria for outcomes analysis, and 30 patients answered the questionnaire. Mean age was 45.6 years old and mean follow-up was 3.8 years. Complication rates for the PMRT cohort were 61.9% vs 31.6% in the pRT cohort, P = .067, and those requiring operative intervention were PMRT 38.1% vs pRT 5.3%, P = .021. Nipple-areolar complex survival was 100% in the pRT vs 85.7% in the PMRT, P = .233. Breast-related quality of life scores were superior in the pRT group within multiple domains. Patients are more likely to develop complications requiring an operative intervention and have decreased breast-related quality of life when undergoing NSM with PMRT compared to patients undergoing NSM having received pRT.