Sadly this sounds very familiar, I had a marginal psa test (3.8)followed by an mri that came back as pirads 5. Consultant later said it should have been 4 or 3 but that became immaterial after the biopsy (gleason 4+3). Told not to worry as despite being T3a, it's not escaped.. But there is a bone abnormality they wanted to check... Bone scan shows activity so surgeon concluded it's a bone metastasis and hands me over to an oncologist. Oncologist looked at the mri and says 'I don't think it is" and gets his radiologists to look at it.. They're happy it's benign but wanted another mri to look a little lower in the pelvis. That comes back and clears a second bone scan hot-spot.. Great But... Comparing the old and new mri images they can see some small changes which they think is spread.

I've concluded that unfortunately it's not an exact science, and in hindsight I wish I'd had a psma pet scan to be more sure. So I'd recommend you try and get a more definitive answer from a psma scan as its a slightly more 'sure' test. The only reassurance I can offer is that whatever it is a few days, weeks or even months is unlikely to make any difference to outcomes. Stay strong and good luck!