Diagnosis of Intestinal-type Gastric Cancer with SM1 Invasion by Magnifying Endoscopic Findings Shoko Ono 1 , Mototsugu Kato 1 , Manabu Nakagawa 1 , Yuichi Shimizu 1 , Aki Imai 2 , Takeshi Yoshida 2 , Tamotsu Hata 2 , Go Kamada 2 , Jojo Hirota 2 , Yuji Ono 2 , Soichi Nakagawa 2 , Masahiro Asaka 2 , Kanako Kubota 3 , Tomoo Itoh 3 1Division of Endoscopy, Hokkaido University Hospital, Sapporo, Japan 2Department of Gastroenterology, Hokkaido University Graduate School of Medicine, Sapporo, Japan 3Department of Surgical Pathology, Hokkaido University Hospital, Sapporo, Japan Keyword: 拡大内視鏡 , 胃癌 , 分化型癌 pp.99-109
Published Date 2007/1/25
DOI https://doi.org/10.11477/mf.1403100389
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 In order to determine the characteristics of SM1 invasive cancer, we analyzed magnifying endoscopic findings of intestinal-type early-stage gastric cancer according to postoperative diagnosis of invasion depth.

 Sixty cases of depressed type early gastric cancer for which postoperative diagnosis was obtained were investigated. In the image of the surface microstructure, a nonstructural pattern was observed frequently in SM cancer, and there was a significant difference in frequencies of its appearance between m cancer and SM1 cancer(p<0.05). Moreover, in images of the microvascular structure, a combination of a fine network pattern and an isolated pattern was observed frequently in sm cancer. Detailed observation of the nonstructural pattern in SM1 cancer revealed a fused pattern of tubular structures and abnormal microvessels such as stretched type and branched type. These may be effective as an indicator by magnifying endoscopy of SM1 cancer. However, the results of this study revealed no obvious differences between SM1 cancer and SM2 cancer in surface microstructure or microvascular pattern.

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