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(BY-oh-KEH-mih-kul REE-laps)
![](https://webarchive.library.unt.edu/eot2008/20081102031104im_/http://www.nci.nih.gov/images/spacer.gif)
| A rise in the blood level of PSA (prostate-specific antigen) in prostate cancer patients after treatment with surgery or radiation. Biochemical relapse may occur in patients who do not have symptoms. It may mean that the cancer has come back. Also called PSA failure and biochemical recurrence. |
Previous Definitions: | binding agent, bioavailable, biochanin A, biochemical reactions, biochemical recurrence | Next Definitions: | biochemist, biofeedback, bioinformatics, biologic agent, biological |
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