摘要
Cholangiocarcinoma(CCA)is a rare and very aggressive malignancy arising from the biliary tract.Based on the location of the tumor,CCA can be divided in intrahepatic cholangiocarcinoma(iCCA),perihilar cholangiocarcinoma(pCCA)and distal cholangiocarcinoma(dCCA).Many other characteristics differentiate these groups,including pathological features,oncological approach and surgical techniques,which in turn influences patient outcomes.