^○Kentaro Yoshimi, Tomonori Yano, Kensuke Shinmura, Masaomi Imajyou, Tomohiro Kadota, AKIHITO KAWAZOE, Tomoji Kato, Shozo Osera, Hiroyuki Morimoto, Tomoyuki Odagaki, Yusuke Yoda, Yasunori Oono, Hiroaki Ikematsu, KAZUHIRO KANEKO (National Cancer Center East, Dept. of Gastroendoscopy, Chiba, Japan)

^○Kensuke Shinmura, Tomonori Yano, Tomoji Kato, Tomohiro Kadota, Masaomi Imajyou, Shozo Osera, Hiroyuki Morimoto, Tomoyuki Odagaki, Yusuke Yoda, Yasunori Oono, Hiroaki Ikematsu, KAZUHIRO KANEKO (Dept. of Gastroenterology, Endoscopy Division National Cancer Center Hospital East,Kashiwa,Japan)

^○Masaho Ota, Kousuke Narumiya, Kenji Kudo, Yuji Inoue, Takeshi Oki, Kiyiaki Taniguchi, Takuji Yamada, Toshiko Serizawa, Ryosuke Nakagawa, Harushi Osugi, Masakazu Yamamoto (Dept. Surg, Inst.Gastroenterol.Tokyo Women'S Medical Univ.Tokyo, Japan)

^○Osamu Chino¹, Hideo Shimada², Takayuki Nishi², Soichiro Yamamoto³, Akihito Kazuno⁴, Tomoko Hanashi¹, Yoichi Tanaka¹, Tomoki Nakamura¹, Miho Nitta², Shuuji Uda³, Yasushi Yamazaki⁴, Soji Ozawa⁴, Seiei Yasuda⁴, Hiroyasu Makuuchi¹ (1.Dept. of Surgery, Tokai Univ. Sch. of Med. Tokyo Hosp., Tokyo, Japan, 2.Dept. of Surgery, Tokai Univ. Sch. of Med., Oiso Hosp., kanagawa, Japan, 3.Dept. of Surgery, Tokai Univ. Sch. of Med. Hachiouji Hosp., Tokyo, Japan, 4.Dept. of Surgery, Tokai Univ. Sch. of Med. , Kanagawa, Japan)

^○Akiyoshi Ishiyama¹, Tomohiro Tsuchida¹, Yusuke Muramatsu¹, Tomoki Shimizu¹, Yuji Miyamoto¹, Hideomi Tomida¹, Yusuke Horiuchi¹, Masami Omae¹, Toshiyuki Yoshio¹, Junko Fujisaki², Masahiro Igarashi¹, Keisyo Chin¹, Hironobu Shigaki², Akira Matsumoto², Kojiro Nishida², Shinji Mine², Masayuki Watanabe², Noriko Yamamoto³ (1.Dept. of Gastroenterology, Cancer Institute Hospital, Tokyo, Japan, 2.Dept. of Surgery, Cancer institute Hospital, Tokyo, Japan, 3.Dept. of Pathology, Cancer Institute Hospital, Tokyo, Japan)