Post-mastectomy reirradiation for ipsilateral T3N0M0 breast tumor relapse: a population-based study.

For patients undergoing total mastectomy after an ipsilateral T3N0M0 breast tumor recurrence, subsequent to initial breast cancer treatment involving breast-conserving surgery and adjuvant radiotherapy, chest wall reirradiation does not enhance survival outcomes. As such, it should not be routinely performed.