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

[SY1-4] High-grade dysplasia/carcinoma in situ of the bile duct margin in patients with surgically resected node-negative perihilar cholangiocarcinoma is associated with poor survival: a retrospective study

^○Ryota Higuchi¹, Takehisa Yazawa¹, Shuichirou Uemura¹, Wataru Izumo¹, Toru Furukawa², Masakazu Yamamoto¹ (1.Department of Surgery, Institute of Gastroenterology, Tokyo Womens Medical University, Tokyo, Japan, 2.Department of Histopathology, Tohoku University Graduate School of Medicine, Sendai, Japan)