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PSA is not a cancer marker: it's a prostate marker
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First, what is PSA? PSA, prostate-specific antigen, is a protein produced in prostate tissue. Any prostate tissue. It's not a cancer marker, it's a prostate marker. That's vital to understand.
After surgery for benign hyperplasia, whether it's laser enucleation, transurethral resection, or green laser vaporisation, what happens to the PSA? It should drop significantly.