Extrahepatic bile duct cancer

Definition of extrahepatic bile duct cancer
National Cancer Institute

extrahepatic bile duct cancer

(EK-struh-heh-PA-tik bile dukt KAN-ser)
A rare cancer that forms in the bile ducts (tubes) outside the liver. Bile ducts carry bile from the liver and gallbladder to the small intestine. The two types of extrahepatic bile duct cancer are perihilar bile duct cancer (also called a Klatskin tumor) and distal bile duct cancer.

Source: NCI Dictionary of Cancer Terms