Carcinoma of the rectum: preoperative radiation therapy as an adjunct to surgery.
D004307:Dose-Response Relationship, Radiation; D006801:Humans; D008207:Lymphatic Metastasis; D011300:Preoperative Care; D011379:Prognosis; D011878:Radiotherapy / Q000401:mortality; D012004:Rectal Neoplasms / Q000532:radiotherapy* / Q000601:surgery