Definitions for "Tumor marker"
Keywords:  cea, psa, biomarker, marker, ovarian
A substance sometimes found in an increased amount in the blood, other body fluids, or tissues and which may mean that a certain type of cancer is in the body. Examples of tumor markers include CA 125 (ovarian cancer), CA 15-3 (breast cancer), CEA (ovarian, lung, breast, pancreas, and gastrointestinal tract cancers), and PSA (prostate cancer). Also called biomarker.
A diagnostic marker for cancer.
Substance produced by cancer cells and sometimes normal cells. These markers are used to monitor progression of cancer or results of chemotherapy or radiation treatments.