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Japanese

Diagnosis of the Depth of Gastric Cancer Invasion Using Ordinary Endoscopy and Chromoendoscpy Junko Fujisaki 1 , Kazuhito Yoshimoto 1 , Toshiaki Hirasawa 1 , Yorimasa Yamamoto 1 , Akiyoshi Ishiyama 1 , Tomohiro Tsuchida 1 , Etsuo Hoshino 1 , Hiroshi Takahashi 1 , Masahiro Igarashi 1 1Gastrointestinal Center, Cancer Institute Hospital, Tokyo Keyword: 早期胃癌 , 内視鏡検査 , 深達度診断 , 色素内視鏡 pp.608-622
Published Date 2009/4/24
DOI https://doi.org/10.11477/mf.1403101633
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 Diagnosis of depth of invasion of gastric cancer using endoscopy with indigocarmine depends on observation of macroscopic appearance, size, surface appearance, appearance of surrounding mucosa and thichness. Changing the air during endoscopic observation helps in the diagnosis of depth of invasion. Size is an important factor for diagnosis of elevated lesions. In under-20mm Type I 70% are intramucosal cancers. In under-30mm type, 50% are SM cancers. And almosts all Type I cancers are M cancer with stalk. In IIa type-cancers, size is an important factor. 85% are M cancers under 20mm. 50% are SM cancers over 50mm. Almost all cancers IIa+IIc type cancers are SM cancers especially poorly differentiated adenocarcinomas. In IIc UL(-)type, characteristic findings of submucosal cancer are deep depression, elevation in the depressed area, and submucosal elevation. Differential diagnosis of elevation in the depressed area is insel and neognesis of mucosa. IIc UL(+)type characteristic findings of submucosal cancer are fusion and thickness of folds.


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

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