carcinoembryonic antigen

Definition of CEA
National Cancer Institute

CEA

A substance that may be found in the blood of people who have colon cancer, other types of cancer or diseases, or who smoke tobacco. CEA levels may help keep track of how well cancer treatments are working or if cancer has come back. It is a type of tumor marker. Also called carcinoembryonic antigen.

Source: NCI Dictionary of Cancer Terms