Bile duct cancer. Cancer of the bile duct is a rare cancer. It is also called cholangiocarcinoma. It develops when abnormal cells grow in an uncontrolled way. Bile ducts are small tubes that connect the liver and gallbladder to the small bowel. The bile ducts carry fluid called bile which helps break down fats in food.
https://www.cancerresearchuk.org/about-cancer/bile-duct-cancer

