Small Vascular Lesions of the Small Intestine Tomonori Yano 1 , Keijiro Sunada 1 , Masayuki Arashiro 1 , Naoyuki Nishimura 1 , Yoshikazu Hayashi 1 , Tomohiko Miyata 1 , Hironori Yamamoto 1 , Kentaro Sugano 1 1Department of Internal Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan Keyword: angioectasia , angiodysplasia , Dieulafoy's lesion , AVM , 内視鏡分類 pp.944-950
Published Date 2009/5/25
DOI https://doi.org/10.11477/mf.1403101677
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 Although small-intestinal vascular lesions account for the bleeding source in a large percentage of patients with Mid-GI-bleeding, observations by endoscopy vary, and their terms have not been standardized. There are 3 pathological conditions of vascular lesions. Angioectasia is characterized by venous/capillary lesions, Dieulafoy's lesion is characterized by arterial lesions, and Arteriovenous malformation is a condition in which arteries and veins are directly connected without capillary beds. We classified vascular lesions with consideration of the presence or absence of pulsatility. The presence or absence of arterial components provides important information for understanding the pathological conditions. This classification will be useful for selecting hemostatic procedures and outcome studies.

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