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NCI Dictionary of Cancer Terms


prostate-specific antigen  listen  (PROS-tayt-speh-SIH-fik AN-tih-jen)

  A protein made by the prostate gland and found in the blood. Prostate-specific antigen blood levels may be higher than normal in men who have prostate cancer, benign prostatic hyperplasia (BPH), or infection or inflammation of the prostate gland. Also called PSA.