^○Keisaku Kondo¹, Keitaro Tanakla¹, Shunsuke Hosono¹, Masashi Ymamomoto¹, Junji Okuda², Kazuhisa Uchiyama¹ (1.Dept. of Gastrornterological Surgery, Sch. of Med. Osaka Medical College, Osaka, Japan, 2.Div. of Cancer Center, Osaka Medical College Hospital, Osaka, Japan)

^○Satomi Koizumi¹, Go Kuwata¹, Taku Tabata², makiko Mori¹, Koichi Koizumi¹ (1.Dept. of Gastrointestinal, Komagome Hospital, Tokyo, Japan, 2.Dept. of Endoscopy, Komagome hospital, Tokyo, Japan)

^○Takuma Iwai, Takeshi Yamada, Hayato Kan, Michihiro Koizumi, Seiichi Shinji, Aya Yamagishi, Yasuyuki Yokoyama, Goro Takahasi, Eiji Uchida (Dept. of Surgery, Nippon Medical School, Tokyo, Japan)

^○Hidejiro Kawahara¹, Kazuhiro Watanabe¹, Mitsuhiro Tomoda¹, Hiroya Enomoto¹, Tadashi Akiba¹, Kstsuhiko Yanaga² (1.Dept. Surg., Kashiwa Hospital, Jikei Univ. Sch. Med., Japan, 2.Dept. Surg., Jikei Univ. Sch. Med., Tokyo Japan)

^○Ryogo Himori¹, Hiroo Yamano¹, Hiro-o Matsushita¹, Kenjiro Yoshikawa¹, Eiji Harada¹, Ryo Takagi¹, Yoshihito Tanaka¹, Michiko Nakaoka¹, Yuko Yoshida¹, Hironori Aoki², Eiichiro Yamamoto², Hiromu Suzuki², Tamotsu Sugai³ (1.Akita Red Cross Hospital Digestive Disease Center , Akita,Japan, 2.Department of Molecular Biology ,Sapporo Medical University,Sapporo,Japan, 3.Department of Molecular Diagnostic pathology, Iwate Medical University School of Medicine ,Morioka ,Japan)