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Clinical Features of Gastric Carcinoid Tumors Yuzuru Kinjo 1 , Haruhisa Suzuki 1 , Ichiro Oda 1 , Nobuaki Ikezawa 1 , Chiko Sato 1 , Masau Sekiguchi 1 , Makomo Makazu 1 , Tatsuo Yachida 1 , Masayoshi Yamada 1 , Seiichiro Abe 1 , Satoru Nonaka 1 , Shigetaka Yoshinaga 1 , Yutaka Saito 1 , Shigeki Sekine 2 , Hirokazu Taniguchi 3 , Ryoji Kushima 3 1Endoscopy Division, National Cancer Center Hospital, Tokyo 2Division of Molecular Pathology, National Cancer Center Research Institute, Tokyo 3Pathology Division, National Cancer Center Hospital, Tokyo Keyword: 胃カルチノイド腫瘍 , NET , WHO分類 , Rindi分類 , TNM分類 pp.982-992
Published Date 2013/6/25
DOI https://doi.org/10.11477/mf.1403113855
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 We reviewed 23 gastric carcinoid tumors diagnosed in our institution between 1997 and 2012. The tumors were treated, based on Rindi's classification. Surgery was performed in 6, endoscopic resection in 12 and 5 were observed without treatment. Among those 23 lesions, 15 were classified as NET(neuroendocrine tumor)G1, 8 were classified as NET G2 according to the WHO 2010 classification. Based on the TNM classification(UICC 7th), 19 were classified as T1N0M0 Stage I, 3 were T2N0M0 Stage IIA, and one was T2N1M0 Stage IIIB. Among 20 tumors followed up for over one year, no patient showed local recurrence, lymph node and distant metastasis or tumor related death during the median follow-up periods of 73.5 months(range, 12-180 months)excluding one who died of liver metastasis, classified as NET G2(Ki-67 index 12%). We encountered 4 cases with lymphovascular invasion and 2 with metastasis. All of these 6cases were classified as NET G2 or T2. In other words, among all 11 with NET G2 or T2, the proportion of cases with lymphovascular invasion or metastasis was 55%, which was significantly higher than the 12 cases classified as NET G1 and T1 with no lymphovascular invasion or metastasis(p<0.05). The result of this study suggests that appropriate treatment for gastric carcinoid tumors based on Rindi's classification in addition to a comprehensive approach considering the WHO 2010 and the TNM classification might be of help in managing these tumors with a favorable long term outcome.


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

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