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Japanese

Value of Endoscopic Ultrasonography in Ulcerative-colitis-associated Colorectal Cancer Seiji Shimizu 1 , Masahiro Tada 2 , Hideo Tomioka 1 1Department of Gastroenterology, JR West Osaka General Hospital 2Tada Gastroenterological Clinic Keyword: colitic cancer , 潰瘍性大腸炎関連大腸癌 , EUS , 存在診断 , 深達度診断 pp.945-955
Published Date 2002/6/25
DOI https://doi.org/10.11477/mf.1403104493
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 We attempted to elucidate the value of endoscopic ultrasonography (EUS) in the diagnosis of ulcerativecolitis-associated colorectal cancers based on our experience with five cancers in four cases. The existence of cancer was able to be recognized by EUS in invasive cancers, but mucosal cancers and dysplasias could not be discriminated from inflammatory prominences. In one case, the existence of an invasive cancer was noticed by EUS, preceeding its detection by endoscopy and histological confirmation. The qualitative diagnosis of cancer was possible for invasive cancers by focusing on the hypoechoic area with irregular contour and which was penetrating the wall layers. Also, the presence of mucinous component was discernible in the areas with lower echo level. The depth of cancer infiltration could be estimated by EUS when the instrument was properly chosen. EUS was also useful to exclude the presence of invasive cancers when strictures or prominences were observed. Although the number of cases encountered was small, it seems to us that EUS may have the potential to detect invasive cancers and may be useful if incorporated into cancer surveillance in longstanding ulcerative colitis.


Copyright © 2002, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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