Like you I had reccurrence 3 years after RP. PSA slowly rising from 0.02 now at 0.31. I had pet/PSMA scan at PSA 0.22 a suspicious finding was noted in a lymph node,I was advised to follow with PSA tests and repeat pet/psma scan at 0.4. after doing much research I decided not to wait until 0.4 but repeated the scan at 0.26 which confirmed the previous suspicions with the infected lymph node. I will be starting 6 month eligard injection followed by radiotherapy 25 imrt/vmat to whole pelvis with additional sessions of SBRT to infected node.
I think it helps when adding the information from the pet scan as you can then receive targeted therapy to the relevant infected sites