Bile duct cancer

Bile duct cancer, also called cholangiocarcinoma, is a rare cancer that's found anywhere in the bile ducts.
The bile ducts are small tubes that connect the liver, gallbladder and small intestine. They are part of the digestive system.
How serious bile duct cancer is depends on where it is in the bile ducts, how big it is, if it has spread and your general health.