Stage IV perihilar bile duct cancer

Definition of stage IV perihilar bile duct cancer
National Cancer Institute

stage IV perihilar bile duct cancer

(... PAYR-ee-HY-ler bile dukt KAN-ser)
Stage IV is divided into stages IVA and IVB. In stage IVA, cancer has spread to 4 or more nearby lymph nodes. In stage IVB, cancer has spread to other parts of the body, such as the liver, lung, bone, brain, skin, distant lymph nodes, or tissue lining the wall of the abdomen and most organs in the abdomen.

Source: NCI Dictionary of Cancer Terms