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Unadjusted overall and cancer‐specific survival analysis in patients with IBTR. Repeat lumpectomy compared with mastectomy in the whole cohort in terms of (A) overall survival and (B) cancer‐specific survival. Repeat lumpectomy compared with mastectomy in the propensity score‐matching cohort in terms of (C) overall survival and (D) cancer‐specific survival.
Abbreviation: IBTR, ipsilateral breast tumor recurrence.
