Fig. 4

Different aspects of cholangiocarcinoma including anatomic localization, microscopic pattern, main histologic finding, cell of origin and molecular alterations with target therapy. iCCA: intrahepatic cholangiocarcinoma, pCCA: perihilar cholangiocarcinoma, dCCA: distal cholangiocarcinoma (dCCA), eCCA: extrahepatic cholangiocarcinoma, MF: mass-forming tumor, PI: periductal infiltrating tumor, ID: intraductal polypoid tumor