If there's the possibility of prostate cancer, this might help:
https://www.nhs.uk/conditions/prostate-cancer/
Things to note from that link:
1. A raised PSA level in a blood test can be an indication of cancer but it doesn't prove it; there are other things which can elevate PSA levels too ;
2. Prostate cancer is very slow to develop. (So much so that men diagnosed with it often aren't offered any treatment at all when it's found in its early stages). Many men live with it for decades, without even needing treatment. So, even if your friend is diagnosed with prostate cancer, it's not a death sentence. It can usually be cured or, indeed, virtually ignored in many cases.
I'll also remind you of what I wrote on your other thread, which is that the majority of enlarged prostate problems are benign (i.e. non-cancerous).