title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 18-2004. A 61-year-old man with rectal bleeding and a 2-cm mass in the rectum.
authors.affiliation: Department of Surgery, Massachusetts General Hospital, USA.
authors.forename: Paul C
authors.initials: PC
authors.lastname: Shellito
authors.forename: Jeffrey W
authors.initials: JW
authors.lastname: Clark
authors.forename: Christopher G
authors.initials: CG
authors.lastname: Willett
authors.forename: Aaron P
authors.initials: AP
authors.lastname: Caplan
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis / Q000188:drug therapy / Q000532:radiotherapy / Q000601:surgery*; D000236:Adenoma / Q000473:pathology; D001706:Biopsy; D003111:Colonic Polyps / Q000473:pathology; D003131:Combined Modality Therapy; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006801:Humans; D008198:Lymph Nodes / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D020360:Neoadjuvant Therapy; D009367:Neoplasm Staging / Q000379:methods; D012004:Rectal Neoplasms / Q000175:diagnosis / Q000188:drug therapy / Q000532:radiotherapy / Q000601:surgery*; D012007:Rectum / Q000000981:diagnostic imaging / Q000473:pathology*; D014463:Ultrasonography