![The Bismuth-Corlette classification of biliary tract. White areas represent tumor and green areas normal bile duct.

Modified from de Groen PC, Gores GJ, LaRusso NF, et al. N Engl J Med 1999; 341:1368.](https://s3-us-west-2.amazonaws.com/secure.notion-static.com/39b5025a-b2d2-4bd9-9f34-8365e2433da5/Bismuth-Corlette_classificatio.jpg)

The Bismuth-Corlette classification of biliary tract. White areas represent tumor and green areas normal bile duct.

Modified from de Groen PC, Gores GJ, LaRusso NF, et al. N Engl J Med 1999; 341:1368.