99P Postoperative Adjuvant Radiotherapy in Primary Malignant Angiosarcoma of the Breast Patients Following Mastectomy or Breast-Conserving Surgery: A Retrospective Study

Abstract

MAOB is one of the rarest types of breast tumors which represents less than 0.2% of all breast tumors and is associated with a poor prognosis. Mastectomy or BCs are the best therapeutic techniques in patients with MAOB, but there is a debate about the need for postoperative RT. We aimed to study the effectiveness of postoperative RT for MAOB over a long period.