title: Radiation therapy as initial treatment for breast cancer: is mastectomy necessary?
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000473:pathology / Q000532:radiotherapy* / Q000601:surgery; D005260:Female; D006801:Humans; D008408:Mastectomy; D008875:Middle Aged; D009367:Neoplasm Staging