Main macroscopic types of cholangiocarcinoma (CC)
| Mass-forming | Most common and usually arising from the small intrahepatic bile ducts. CC arising from the large intrahepatic bile ducts may be of any kind |
| Periductal-infiltrating | Worst prognosis |
| Intraductal growth | Least common and represents malignant transformation of an intraductal papillary neoplasmBest prognosis |
| Mixed |