PSMA-PET can be seen as a miracle device. In fact it is incredibly useful but not in all cases. I would have thought yours was a textbook case for it. So if it were my prostate I would be asking for it. I hear the vastly-knowledgeable LynEyre and it is probably benign, but I hear you too and I can see why you think something is off. Given the stakes, for my prostate, I would want more than "probably". A scan would not be definitive but if it did find something you'd be in a great position compared to waiting. The trouble is all these criteria: 0.2 for surgery, nadir+2 for RT, are out of date in the modern imaging world. Imaging is a huge, huge change and these Drs need to adjust accordingly: it might not work but I'd be pushing them. Just my 2¢.