Longmire classification of extrahepatic biliary system

Longmire classification was published in 1973. It divides extrahepatic biliary system into three sections with respect to spread, surgical approach and symptoms caused by primary tumours.

Upper third right and left hepatic duct, bifurcation, common hepatic duct
Middle third common bile duct from the cystic duct to pancreas
Lower third intrapancreatic part of the common bile duct
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