Bile Duct Cancer, also known as cholangiocarcinoma (CCA), is a rare and aggressive form of cancer that develops in the bile ducts. There are two different types of CCA, intrahepatic and extrahepatic. Intrahepatic CCA affects the bile ducts inside your liver while extrahepatic affects the bile ducts outside your liver nearer to the intestine. CCA appears mostly in people over 60 years of age, and it occurs slightly more often in men than women. Having certain gastrointestinal, bowel, or liver diseases, obesity, as well as exposure to certain chemicals, can increase your risk for developing CCA. There are usually no symptoms of CCA until it has reached an advanced stage.