Pre-biopsy Diagnosis Using Magnifying Narrow Band Imaging for Group 2 Gastric Lesions Diagnosed from Biopsy Specimens Hisashi Doyama 1 , Hiroyoshi Nakanishi 1 , Teppei Masunaga 1 , Naohiro Yoshida 1 , Shigetsugu Tsuji 1 , Kenichi Takemura 1 , Kazuyoshi Katayanagi 2 , Hiroshi Kurumaya 2 , Hiroshi Minato 2 1Department of Gastroenterology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan 2Department of Diagnostic Pathology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan Keyword: 胃癌 , 生検 , Group 2 , NBI , 拡大内視鏡 pp.1488-1500
Published Date 2018/10/25
DOI https://doi.org/10.11477/mf.1403201499
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 According to the 14th edition of the Japanese Classification of Gastric Carcinoma, a Group 2 biopsy diagnosis is defined as indefinite for neoplasia, including regenerative atypia, adenoma, and carcinoma. Endoscopic reexaminations are therefore necessary for the diagnosis of Group 2 gastric lesions, prior to which it is necessary to review endoscopic images and biopsy specimens, including deep cutting and immunostaining. Such reviews must be accompanied with careful discussion between endoscopists and pathologists. Furthermore, considering the pre-biopsy diagnosis using magnifying narrow band imaging for Group 2 gastric lesions in this study, ESD as a diagnostic treatment is acceptable as one of first clinical support for the gastric lesions.

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