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CEA marker - Definition


Definition


A marker is a substance whose presence or elevation enables the diagnosis or monitoring of a disease. CEA, for carcinoembryonic antigen, is mainly produced by certain cancerous tumors, particularly those affecting the digestive system, including cancers of the colon or rectum, but also some tumors of the breast, liver, lung, or thyroid. CEA can also be produced in specific diseases, such as Crohn's disease, chronic inflammatory disease of the colon, or liver disease such as cirrhosis. Thus, given the diversity of possible pathologies in cases of increases in this marker, the interest of the latter remains low and it is little used, or at most in some cases of breast cancer.

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