Cholangiocarcinoma is the second most common primary liver malignancy and accounts for 10‐20% of primary tumors. Hepatolithiasis developing secondary to recurrent pyogenic cholangitis is another risk factor. Other risk factors include congenital biliopancreatic anomalies, cirrhosis, primary sclerosing cholangitis, hepatitis B or C virus infection, and heavy alcohol consumption. The Cholangiocarcinoma is classified into three types: mass‐forming cholangiocarcinoma; periductal infiltrative cholangiocarcinoma; and intraductal cholangiocarcinoma. Mass‐forming intrahepatic cholangiocarcinoma usually presents as a solitary intrahepatic heterogeneous mass with irregular well‐defined margins. They are usually hypovascular although hypervascular cholangiocarcinomas may also be seen occasionally. Vascular compression (especially portal vein) is common. Development of intravascular thrombosis is rare and is a distinguishing feature from hepatocellular carcinoma (HCC). HCC with sclerosis and HCC‐cholangiocarcinoma may demonstrate similar imaging features to cholangiocarcinoma. Abscesses, hepatic tuberculosis, and inflammatory myofibroblastic tumor may mimic cholangiocarcinomas.