
Bile ducts, when functioning properly, drain bile into the small intestines during the digestion process. When there is an obstruction in this system of tubes, the bile will back up into the gallbladder or liver and the fats and lipids in the intestines will pass through undigested. In the case of bile duct cancer, a tumor may obstruct the flow of bile. If this happens, the bilirubin (a brownish-yellow substance found in bile) builds up and causes jaundice, or the yellowing of the skin and eyes. Jaundice is not itself a disease, but rather a symptom of an underlying condition, typically affecting the liver or biliary system.Cholangiocarcinoma...