Endoscopic Diagnose to Delineate Early Gastric Cancer Kunihisa Uchita 1 , Atsuki Maeda 2 , Yuriko Shigehisa 2 , Yoshihiro Miyata 2 , Rikiya Daike 1 , Shiori Sasaki 1 , Takehiro Iwasaki 1 , Koji Kojima 1 , Michiyo Okazaki 1 , Shinichi Iwamura 1 1Department of Gastroenterology, Japanese Red Cross Kochi Hospital, Kochi, Japan 2Department of Internal Medicine, Japanese Red Cross Kochi Hospital, Kochi, Japan Keyword: 胃癌範囲診断 , 現感染胃癌 , 除菌後胃癌 , 分化型胃癌 , 未分化型胃癌 pp.18-27
Published Date 2020/1/25
DOI https://doi.org/10.11477/mf.1403201922
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 We investigated the diagnostic abilities of three endoscopic modalities, C-WLI(conventional white light imaging), CE(chromoendoscopy), and ME-NBI(magnifying endoscopy with NBI), for diagnosing early gastric cancers. The diagnostic abilities of C-WLI and CE for both gastric cancers with HP(Helicobacter pylori)and those without HP were almost same. The diagnostic ability of ME-NBI for gastric cancers with HP was high and constant, regardless of magnification power. However, after HP eradication, the diagnostic ability of ME-NBI with low magnification power was lower than that of ME-NBI with full magnification power. In addition, undifferentiated gastric cancers were more difficult to delineate than differentiated cancers with all the three endoscopic modalities. Therefore, identifying differences in the features of different types of gastric cancers, which undergo various changes due to HP infection, and differences in the diagnostic ability of each endoscopic modality is important.

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