Bismuth-Corlette classification

Last revised by Ariel Dahan on 27 Sep 2021

The Bismuth-Corlette classification is a classification system for perihilar cholangiocarcinomas, which is based on the extent of ductal infiltration.  

Classification

  • type I
    • limited to the common hepatic duct, below the level of the confluence of the right and left hepatic ducts
  • type II
    • involves the confluence of the right and left hepatic ducts
  • type IIIa
    • type II and extends to involve the origin of the right hepatic duct (confluence of the right posterior and anterior sectoral ducts)
  • type IIIb
    • type II and extends to involve the origin of the left hepatic duct (confluence of the 2nd, 3rd and 4th segmental ducts)
  • type IV
    • extending to and involving the origins of both right and left hepatic ducts (i.e., combination of types IIIa and IIIb)
      or
    • multifocal involvement
  • type V

The classification system may be used both for cholangiocarcinoma and benign strictures ref required

See also

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Cases and figures

  • Figure 1
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  • Case 1: IIIA
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  • Case 2: type II
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