1)Kanesaka T, Sekikawa A, Tsumura T, et al. Absent microsurface pattern is characteristic of early gastric cancer of undifferentiated type:magnifying endoscopy with narrow-band imaging. Gastrointest Endosc 80:1194-1198, 2014
2)Nakayoshi T, Tajiri H, Matsuda K, et al. Magnifying endoscopy combined with narrow band imaging system for early gastric cancer:correlation of vascular pattern with histopathology(including video). Endoscopy 36:1080-1084, 2004
3)Yokoyama A, Inoue H, Minami H, et al. Novel narrow-band imaging magnifying endoscopic classification for early gastric cancer. Dig Liver Dis 42:704-708, 2010
4)Nishikura K, Watanabe H, Iwafuchi M, et al. Carcinogenesis of gastric endocrine cell carcinoma:analysis of histopathology and p53 gene alteration. Gastric Cancer 6:203-209, 2003
5)岩渕三哉,西倉健,渡辺英伸.胃と大腸の早期内分泌細胞癌.消内視鏡 7:275-284, 1995