title: Colonoscopic removal of a polypoid arteriovenous malformation.
abstract: A 53-year-old male presenting with a 3-month history of intermittent mild rectal bleeding was found, on double contrast barium enema, to have a large polyp on a long stalk in the sigmoid colon. Large bowel endoscopy confirmed the presence of a 2 cm pedunculated polyp which was removed using a diathermic snare, with slight bleeding following the procedure that did not require endoscopic haemostasis. Only after histologic examination was the polyp shown to be a colonic arteriovenous malformation. Endoscopically, arteriovenous malformations generally appear as flat or elevated bright red lesions. A pedunculated polypoid appearance is extremely uncommon. In this case, no gastrointestinal bleeding or polypoid recurrence was observed during the 12 months of clinical and endoscopic follow-up.
authors.affiliation: Unit of Gastroenterology, Faculty of Medicine, Federico II University of Naples, Italy. darienzo@unina.it
authors.forename: A
authors.initials: A
authors.lastname: D'Arienzo
authors.forename: F
authors.initials: F
authors.lastname: Manguso
authors.forename: F P
authors.initials: FP
authors.lastname: D'Armiento
authors.forename: R
authors.initials: R
authors.lastname: Bennato
authors.forename: P
authors.initials: P
authors.lastname: Somma
authors.forename: A
authors.initials: A
authors.lastname: Pisani
authors.forename: A
authors.initials: A
authors.lastname: Panarese
authors.forename: G
authors.initials: G
authors.lastname: Mazzacca
mesh_terms: D001165:Arteriovenous Malformations / Q000601:surgery*; D003111:Colonic Polyps / Q000098:blood supply / Q000601:surgery*; D003113:Colonoscopy; D006801:Humans; D008297:Male; D008875:Middle Aged