Gender Differences

Cholangiocarcinoma (CCA) is a rare type of cancer that arises from the intrahepatic or extrahepatic biliary ductal epithelium, accounting for approximately 10% to 15% of all primary hepatic malignancies. CCA is classified as intrahepatic or extrahepatic CCA. In the United States, the incidence of CCA has been rising consistently since 1973.