Stomach and Intestine(Tokyo) Volume 54, Issue 7 (June 2019)

Clinical Features of Gastric Neuroendocrine Tumor(NET)Complicated with Type A Gastritis Yuichi Sato 1 , Kunihiko Yokoyama 1 , Jun Watanabe 1 , Atsuo Nakamura 1 , Satoru Hashimoto 2 , Shuji Terai 2 1Division of Gastroenterology, Niigata prefectural Yoshida Hospital, Tsubame, Japan 2Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan Keyword: A型胃炎 , neuroendocrine tumor , I型胃NET , リンパ節転移 , 遠隔転移 pp.1019-1023
Published Date 2019/6/25
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 Gastric NETs complicated with type A gastritis are classified as type I gastric NETs. Type I gastric NETs are small in size, many in number, and histologically well-differentiated ; therefore, they have a good prognosis. Many past reports, including those from Japan, have reported these characteristics. However, it has recently been reported that type I gastric NETs complicated with lymph node and liver metastasis exist with a low incidence. The clinical features of such type I gastric NETs are as follows:1)tumor diameter ≧10mm, 2)high Ki-67 index, and 3)invasion beyond submucosa. Currently, a total of 200 cases have been registered and analyzed for studying type I gastric NET in Japan.

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54巻7号 (2019年6月)
電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院