Your liver makes a substance called bile that helps with digestion. Your gallbladder stores it until you need it to digest fat. Then your gallbladder pushes the bile into tubes called bile ducts. They carry the bile to your small intestine.
Bile duct cancer is rare. It can happen in the part of the bile duct that is outside or inside the liver. Cancer of the bile duct outside of the liver is much more common. Risk factors include inflammation of the bile duct, older age, some liver diseases, and exposure to certain chemicals.
Symptoms can include
Treatments include surgery, radiation therapy, and chemotherapy.