Imaging and interventions in hilar cholangiocarcinoma: A review

Table 1 Bismuth-Corlette classification of hilar cholangiocarcinoma

Stage	Description
I	Tumor involving common hepatic duct without involvement of primary biliary confluence (confluence of right and left hepatic ducts) (Figure 19)
II	Tumor involving primary biliary confluence (Figure 20)
IIIa	Tumor involving primary biliary confluence and right secondary biliary confluence (confluence of right anterior and posterior sectoral ducts) (Figure 21)
IIIb	Tumor involving primary biliary confluence and left secondary biliary confluence (confluence of left medial and lateral sectoral ducts) (Figure 22)
IV	Tumor involving primary and both secondary biliary confluence (Figure 23)