title: Cecal polypoid arteriovenous malformations removed by endoscopic biopsy.
abstract: Colonic arteriovenous malformation (AVM) is one of the causes of lower gastrointestinal bleeding. Unlike small vascular ectasia or angiodysplasia, colonic AVM tends to be solitary, large in size, and identified endoscopically as flat or elevated bright red lesion. Herein, we report a case of non-solitary and small cecal AVMs which were removed by endoscopic biopsy. A 66-yr-old woman was referred for routine gastrointestinal cancer screening. She was suffering from diabetes, hypertension, end-stage renal disease, and anemia of chronic disease. On colonoscopic finding, three semi-pedunculated polyps, less than 5 mm in size, were noticed near to the appendiceal orifice. Since the lesions revealed normal-looking epithelium with converging folds on the cecal base, lesions were diagnosed as inflammatory polyps on gross finding. Three biopsies were taken from each lesion. Bleeding from the biopsied site ceased spontaneously. Histopathologic evaluation demonstrated intramucosal hemorrhage and dilated submucosal vessels which were consistent with polypoid colonic AVMs.
authors.affiliation: Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea.
authors.forename: Byung Kook
authors.initials: BK
authors.lastname: Kim
authors.forename: Hye Seung
authors.initials: HS
authors.lastname: Han
authors.forename: Sun-Young
authors.initials: SY
authors.lastname: Lee
authors.forename: Chi-Hun
authors.initials: CH
authors.lastname: Kim
authors.forename: Choon Jo
authors.initials: CJ
authors.lastname: Jin
mesh_terms: D000368:Aged; D001165:Arteriovenous Malformations / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D001706:Biopsy; D002432:Cecum / Q000098:blood supply / Q000473:pathology; D003106:Colon / Q000098:blood supply* / Q000473:pathology; D003111:Colonic Polyps / Q000473:pathology / Q000601:surgery*; D003113:Colonoscopy; D005260:Female; D006801:Humans