title: Preoperative roentgen therapy for cancer of the rectum and rectosigmoid.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology / Q000532:radiotherapy* / Q000601:surgery; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D011446:Prospective Studies; D012004:Rectal Neoplasms / Q000473:pathology / Q000532:radiotherapy* / Q000601:surgery; D012737:Sex Factors; D012811:Sigmoid Neoplasms / Q000473:pathology / Q000532:radiotherapy* / Q000601:surgery