Question: is high bilirubin a sign of cancer?
Answer: Bilirubin is a chemical that may reach high levels in people with pancreatic cancer due to blockage of the common bile duct by a tumor. There are many other non-cancerous causes of an elevated bilirubin level, such as hepatitis, gallstones, or mononucleosis. Carbohydrate antigen 19-9 (CA19-9) is a tumor marker.