Hilar bile duct cancer is the most difficult surgery among gastrointestinal cancer, since you have to cut into the porta hepatis area where bile duct, portal vein, hepatic artery are intricately intertwined.
肝門部胆管がんは→ 消化器がんの中でも 最も手術が難しい。 胆管　門脈　肝動脈が 複雑に絡み合う→