
PSA is a substance produced in the prostate gland. Normally, a small amount of PSA enters the bloodstream. A higher amount of PSA or an abrupt rise in PSA levels can indicate a problem, possibly cancer.
The question were trying to answer is, if we see a man with a rising PSA level, could this change in PSA be explained by a proportional increase in prostate size? says Dr. Breau. Our data indicate that men with or without prostate cancer have similar rates of prostate growth. If a mans PSA is quickly rising, he likely deserves a prostate biopsy to determine if he has prostate cancer. Assessment of change in prostate size should not influence the decision to biopsy.
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