NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,122 terms related to cancer and medicine.

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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.