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Tumor markers are substances found at higher than normal levels in the blood, urine, or body tissue of some people with cancer. Although cancer cells often produce tumor markers, healthy cells in the body may produce them as well. Breast cancer tumor markers are substances that are produced by cancer cells or by the body in response to cancer, and include tests such as CA , CA . 24 rows · In breast cancer, research has found that watching tumor markers after treatment does not .
A tumor marker is a substance that is made by the body because a cancer is present. Or it can be made by the cancer itself. Some of these markers are specific to one cancer. Some are seen in several types of cancer. The markers can be found in the blood, urine or tissues. Tumor markers are most often used to track how a patient's cancer responds to breast cancer tumor markers increase by 20.
If the level is going down, the treatment is working.