Bile duct cancer, also known as cholangiocarcinoma, is a rare form of cancer that affects the bile ducts. Two bile ducts in the human body connect the liver and gallbladder to the small intestine.
A bile duct stone is a gallstone that becomes trapped in the bile duct. Doctors may refer to this condition as choledocholithiasis. Having a gallstone in the bile duct can be intensely painful.