title: Preoperative irradiation in the definitive treatment of adenocarcinoma of the rectum.
mesh_terms: D000230:Adenocarcinoma / Q000532:radiotherapy* / Q000601:surgery; D000328:Adult; D006801:Humans; D008297:Male; D008875:Middle Aged; D011300:Preoperative Care; D012004:Rectal Neoplasms / Q000532:radiotherapy* / Q000601:surgery