Cecal Polypoid Arteriovenous Malformations Removed by Endoscopic Biopsy

다국어 초록 (Multilingual 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 ㎜ 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.

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