NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,084 terms related to cancer and medicine.
- PSA failure
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- A rise in the blood level of PSA (prostate-specific antigen) in prostate cancer patients after treatment with surgery or radiation. PSA failure may occur in patients who do not have symptoms. It may mean that the cancer has come back. Also called biochemical recurrence and biochemical relapse.