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

[SY1-5] Impact of carcinoma in situ at the ductal stump on long-term outcomes in patients received surgical resection for extrahepatic cholangiocarcinoma

^○Akira Shimizu, Akira Kobayashi, Takahide Yokoyama, Hiroaki Motoyama, Tsuyoshi Notake, Kenta Yokoi, Kentaro Fukushima, Hitoshi Masuo, Tatsuto Terada, Hiroki Sakai, Kiyotaka Hosoda, Shinichi Miyagawa (Department of Surgery, Shinshu University, Matsumoto, Japan)