Symposium 1
CIS/High-grade Dysplasia in the Biliary Tract: How Should it be Managed?

[SY1-3] Residual carcinoma in situ at the ductal stump has a negative survival effect: An analysis of early-stage cholangiocarcinomas

^○Shunsuke Onoe, Tetsuo Tsukahara, Tomoki Ebata, Hiroyuki Yokoyama, Toshio Kokuryou, Tsuyoshi Igami, Takashi Mizuno, Junpei Yamaguchi, Masato Nagino (Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan)