Prophylactic postoperative radiotherapy and consecutive primary cancers.
D000368:Aged; D001943:Breast Neoplasms / Q000453:epidemiology / Q000532:radiotherapy* / Q000601:surgery; D005260:Female; D005833:Genital Neoplasms, Female / Q000453:epidemiology; D006801:Humans; D007414:Intestinal Neoplasms / Q000453:epidemiology; D008408:Mastectomy; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000453:epidemiology* / Q000276:immunology; D012878:Skin Neoplasms / Q000453:epidemiology