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Magnifying Colonoscopy for the Diagnosis of Dysplasia and Colitic Cancer in Patients with Ulcerative Colitis Kiyonori Kobayashi 1 , Miwa Sada 1 , Masaru Yamagata 1 , Satomi Haruki 1 , Taishi Ogawa 1 , Kaoru Yokoyama 1 , Tomoe Katsumata 1 , Katsunori Saigenji 1 1Department of Gastroenterology, Kitasato University East Hospital, Sagamihara, Japan Keyword: 潰瘍性大腸炎 , dysplasia , colitic cancer , 拡大内視鏡診断 , pit pattern pp.849-854
Published Date 2007/4/26
DOI https://doi.org/10.11477/mf.1403101096

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 We mainly evaluated the clinical usefulness of magnifying colonoscopy for the diagnosis of dysplasia and colitic cancer in patients with ulcerative colitis. Thirteen lesions of dysplasia in ten patients and five colitic cancers in four patients were observed by conventional and magnifying colonoscopy. On magnifying colonoscopy, most lesions of dysplasia and colitic cancer showed IIIs to IIIL or IIIL to IV or IV type pit patterns. Tumorous pits associated with theses lesions were similar to those seen in sporadic colorectal adenomas and cancers, but the pit density was slightly lower. VN type pit pattern was not detected in our patients, because the depth of invasion of all colitic cancer was limited to the mucosa. It was concluded that magnifying colonoscopy is useful for early detection and diagnosis of dysplasia and colitic cancer. However, further studies are necessary for estimating the role of magnifying colonoscopy in the diagnosis of dysplasia and colitic cancer in patients with ulcerative colitis.


Copyright © 2007, 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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