Preoperative radiation therapy as an adjuvant to surgery for carcinoma of the colon and rectum.
D000230:Adenocarcinoma / Q000532:radiotherapy / Q000601:surgery; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000401:mortality; D011300:Preoperative Care; D012004:Rectal Neoplasms / Q000532:radiotherapy* / Q000601:surgery; D012811:Sigmoid Neoplasms / Q000532:radiotherapy* / Q000601:surgery