^○Yusaku Tanaka¹, Haruhisa Suzuki¹, Shigetaka Yoshinaga¹, Ichiro Oda¹, Masau Sekiguchi¹, Genki Mori¹, Seiichiro Abe¹, Satoru Nonaka¹, Yutaka Saito¹, Shigeki Sekine², Hitoshi Katai³ (1.Div.Of Endoscopy Division,National Cancer Center Hospital,Tokyo,Japan, 2.Div.of Pathology Division,National Cancer Center Hospital,Tokyo,Japan, 3.Div.of Gastric Surgery Division,National Cancer Center Hospital,Tokyo,Japan)

^○Soichi Itaba, Yosuke Minoda, Hiroyuki Murao, Toshiyuki Tanaka, Kazuhide Matsumoto, Toyoma Kaku (Dept. of Gastroenterology, Kyushu Rosai Hospital, Fukuoka, Japan)

^○Shinichiro Sato¹, Shosuke Hosaka¹, Misako Okabayashi¹, Kiyotaka Umeki¹, Masaaki Hamada², Ryosuke Kobayashi^2,3 (1.Gastroenterology,Chibanishi General Hospital,Matsudo,Japan, 2.Gatroenterological Surgery,Chibanishi general hospital,Matsudo,Japan, 3.Gatroenterological Surgery,Chiba cancer center,Chiba,Japan)

^○Junichi Uematsu^1,2, Masakatsu Fukuzawa^1,2, Mikinori Koga¹, Shin Kono¹, Takemasa Satou¹, Sho Suzuki¹, Naoko Yagi¹, Yuichirou Tuji¹, Kei Yamamoto¹, Kenji Yagi¹, Takuji Gotoda¹, Takasi Kawai², Fuminori Moriyasu¹ (1.Dept.Of Gastroenterology and Hematology,Tokyo Medical University,Tokyo,Japan, 2.Endoscopy Center,Tokyo Medical University,Tokyo,Japan)

^○genya kaji, koji yamada, go kajikawa, shun hattori, minare tokui, hiroki uchida, akio iizuka (Okazki City Hospital,Dept. of Gastroenterology, Okazaki, Japan)