NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,777 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

stage I distal extrahepatic bile duct cancer
(... DIS-tul EK-struh-heh-PA-tik bile dukt KAN-ser)
Stage I is divided into stages IA and IB. In stage IA, cancer is found in the distal extrahepatic bile duct (where the bile duct empties into the small intestine) only. In stage IB, cancer has spread all the way through the wall of the distal bile duct.