NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,041 terms related to cancer and medicine.
- CA 19-9
- A substance released into the bloodstream by both cancer cells and normal cells. Too much CA 19-9 in the blood can be a sign of pancreatic cancer or other types of cancer or conditions. The amount of CA 19-9 in the blood can be used to help keep track of how well cancer treatments are working or if cancer has come back. It is a type of tumor marker.