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The Correspondency of Magnifying Endoscopic Diagnosis and Pathological Diagnosis: Cases of Colon Epithelial Tumor Takahiro Fujii 1 , Kazuhiro Nagata 1 , Yutaka Saito 1 1Department of Endoscopy, National Cancer Center Hospital Keyword: 拡大電子スコープ , 腺ロ形態診断 , 深達度診断 , desmoplastic reaction , serrated adenoma pp.1653-1664
Published Date 1999/12/25
DOI https://doi.org/10.11477/mf.1403102897
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 We examined how much the mucosal crypt patterns of colon polyps coincide with their histological findings. Mucosal crypt patterns were assessed by magnifying colonoscopy under indigo carmine spray (0.2%) and/or crystal violet staining and classified into three groups with modified Kudo's classification.

 The coincidence rates of Type Ⅰ or Ⅱ crypt (non-nepotistic crypt pattern), type ⅢL, ⅢS, Ⅳ crypt (adenoma or intramucosal carcinoma crypt pattern), and Type Ⅴ (invasive carcinoma crypt pattern) were 85% (159/ 187), 93% (4,339/4,673), and 98% (512/525), respectively.

 Type Ⅴ is characterized with irregular pits, which are mainly derived from desmoplastic reaction on the mucosal surface of invasive cancer. However, histological examination revealed that the reaction was not found in 29% (57/196) of protruding type, 29% (7/24) of flat elevated type, and 15% (11/73) of depressed type in submucosal cancer.

 We demonstrated that crypt patterns of serrated adenoma show pine-cone like appearance (villous pattern) with serration and tubular appearance with serration under magnifying endoscopic examination.

 Conclusion: Mucosal crypt patterns of colon lesions diagnosed endoscopically highly corresponded with their histologic diagnosis. We believe that magnifying colonoscopy is clinically useful for precise endoscopic diagnosis to distinguish the nature of colon lesions.


Copyright © 1999, 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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