Fig. 1From: Confinement to the intrapancreatic bile duct is independently associated with a better prognosis in extrahepatic cholangiocarcinomaClassification into the three groups according to anatomical location of the tumor based on histopathological findings; the DISTAL group (a), tumors confined to the intrapancreatic BD; the MID group (b), tumors confined to the middle bile duct; and the DIFFUSE group (c), tumors located in the diffusely middle and intrapancreatic BDBack to article page