[Rectal cancer].
D000230:Adenocarcinoma / Q000175:diagnosis*; D000328:Adult; D000368:Aged; D001706:Biopsy; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007417:Intestinal Polyps / Q000175:diagnosis*; D007422:Intestines / Q000000981:diagnostic imaging; D008207:Lymphatic Metastasis; D008297:Male; D011859:Radiography; D012004:Rectal Neoplasms / Q000175:diagnosis*