Cholangiocarcinoma includes intrahepatic, perihilar (Klatskin tumors) and distal extrahepatic tumors of the bile ducts. The symptoms depends upon the location of the tumor, extent of invasion and the degree of biliary obstruction. Diagnostic imaging is the primary way to assess the progress of biliary tract carcinoma. Technological advances of modern imaging techniques, especially ultrasonography, computed to­mography and magnetic resonance, caused that earlier diagnosis of biliary cancer is possible if the patient is directed at the right time. The authors have tried to show the current possibilities of imaging methods, to determine how it comes to local tumor growth and spread to surrounding structures and provide indications for therapeutic intervention.