^○Hiroshi Kurahara¹, Kosei Maemura¹, Yuko Mataki¹, Masahiko Sakoda¹, Satoshi Iino¹, Yota Kawasaki¹, Motoyuki Hashiguchi¹, Shinichi Ueno², Hiroyuki Shinchi³, Shoji Natsugoe¹ (1.Department of Digestive Surgery, Breast and Thyroid Surgery, Kagoshima University, Kagoshima, Japan, 2.Clinical Oncology, Kagoshima University, Kagohsima, Japan, 3.Health Sciencesr, Kagoshima University, Kagoshima, Japan)

^○Seiji Nat, Yasuhiro Shimizu, Yoshiki Senda (Gastroenterological Surgery of Aichi Cancer Center Hospital)

^○Ken-ichi Okada, Manabu Kawai, Seiko Hirono, Masaki Ueno, Motoki Miyazawa, Shinya Hayami, Yuji Kitahata, Ryouhei Kobayashi, Norihiko Suzaki, Hiroki Yamaue (Second Department of Surgery, Wakayama Medical University, Wakayama, Japan)

^○Yutaka Takeda^1,5, Hidetoshi Eguchi^2,5, Hidenori Takahashi⁵, Shin Nakahira⁵, Masaki Kashiwazaki⁵, Junzo Shimizu⁵, Yoshiaki Ohmura^1,5, Yoshiteru Katsura^1,5, Hiroaki Nagano^3,5, Daisuke Sakai⁵, Fumiaki Isohashi^4,5, Masaki Mori^2,5, Yuichiro Doki^2,5 (1.Department of Surgery, Kansai Rosai Hospital, 2.Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 3.Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, 4.Department of Radiation Oncology, Graduate School of Medicine, Osaka University, 5.Clinical Study Group of Osaka University, Hepato-Biliary-Pancreatic Group)