The Bismuth-Corlette classification is a classification system for extrahepatic bile duct obstruction.
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Usage
The Bismuth-Corlette classification is commonly used in cases of perihilar cholangiocarcinomas, reflects the extent of ductal infiltration and impacts resection and reconstruction options 1,2.
It is also useful in classifying benign strictures and bile duct injury, although in the latter scenario, it has been superseded by the Strasberg classification, which was developed following the development of laparoscopic surgery 4,5.
Classification
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type I
limited to the common hepatic duct, below the level of the confluence of the right and left hepatic ducts
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type II
involves the confluence of the right and left hepatic ducts
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type IIIa
type II and extends to involve the origin of the right hepatic duct (confluence of the right posterior and anterior sectoral ducts)
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type IIIb
type II and extends to involve the origin of the left hepatic duct (confluence of the 2nd, 3rd and 4th segmental ducts)
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type IV
extending to and involving the origins of both right and left hepatic ducts (i.e., combination of types IIIa and IIIb)
ormultifocal involvement
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