Breast cancer--preoperative and postoperative radiation therapy.
D001943:Breast Neoplasms / Q000532:radiotherapy*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008408:Mastectomy; D009364:Neoplasm Recurrence, Local; D011182:Postoperative Care; D011300:Preoperative Care