The Diagnosis of Invasion Depth of 0-IIa+IIc Submucosal Invasive Carcinoma with Hardness by Magnifying Endoscopy, Report of a Case Nana Hayashi 1 , Shinji Tanaka 1 , Kenjiro Shigita 2 , Naoki Asayama 2 , Soki Nishiyama 2 , Motomi Terasaki 2 , Koichi Nakadoi 2 , Shiro Oka 1 , Fumio Shimamoto 3 , Kazuaki Chayama 2 1Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan 2Department of Gastroenterology and Metabolism, Hiroshima University Hospital, Hiroshima, Japan 3Department of Health Science, Prefectural University of Hiroshima, Faculty of Human Culture and Society, Hiroshima, Japan Keyword: 早期大腸癌 , 深達度診断 , 拡大内視鏡観察 pp.1207-1213
Published Date 2015/8/25
DOI https://doi.org/10.11477/mf.1403200392
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 A male in his 70's was referred to our hospital for further examination and treatment of early colorectal carcinoma. A colonoscopy revealed a 15mm-diameter 0-IIa+IIc lesion with hardness in the central depression in the sigmoid colon. However, magnifying colonoscopy showed a regular pit pattern or VI pit pattern. Thus, we ruled out deep submucosal invasive carcinoma. We conducted endoscopic submucosal dissection to perform an excisional total biopsy. Histopathological examination revealed well-differentiated adenocarcinoma(tub1)with shallow submucosal invasion(T1a;submucosal, 600μm), no vessel involvement, and negative tumor margin(curative resection).

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