Risk factors and classifications of hilar cholangiocarcinoma

Figure 1 Morphologic classification of cholangiocarcinoma. A: Mass-forming; B: Periductal-infiltrating; C: Intraductal-growing.

Figure 2 Bismuth-Corlette classification of Perihilar (Klatskin) tumors. TypeI: Proximal bile duct tumor that do not extend to the bifurcation; TypeII: Tumor extend to the bifurcation without extension into the intrahepatic bile ducts; TypeIIIa: Tumoral occlusion of the common hepatic duct and the right hepatic duct; TypeIIIb: Tumoral occlusion of the common hepatic duct and the left hepatic duct; Type IV: Tumor involving the confluence and both the right and left hepatic ducts.

Figure 3 Consensus classification from the European Hepato-Pancreato-Biliary Association. Involvement of the portal vein or hepatic artery is considered when the tumor encompasses more than 180º of the circumference. A: Biliary involvement (B), based on the Bismuth-Corlette classification; B: Portal involvement; C: Arterial involvement. Adapted from Deoliveira et al [24].