Figure 1.

Hilar lesions are further subdivided based on location as indicated by Bismuth-Corlette classification. A: Bismuth-Corlette classification of hilar CC. TypeIinvolves the common hepatic duct, distal to the bifurcation of the biliary tree. Type II affects the bifurcation. Type IIIa affects the right hepatic duct in addition to the bifurcation. Type IIIb affects the left hepatic duct in addition to the bifurcation. Type IV involves the bifurcation and both right and left hepatic ducts or indicates multifocal CC; B: Endoscopic retrograde cholangiography reveals hilar cholangiocarcinoma (Klatskin type 2) in one of our cases.