Hi Bob. My PSA post RP was undetectable in 2018 but it began to slowly rise and I paid for a private PSMA-PET scan in January 2022 which did detect a small cancerous cell where my seminal vesicle had been. This led to SRT (33 doses) along with 2 shots of Zoladex. My radiation team did not feel that further shots were required. I have now had 4 PSA tests since the SRT and they have all been undetectable. I asked my radiation oncologist what the likelihood of me remaining cancer free would be and he suggested that normally he would suggest 50%; but in my case he is hopeful that it might be 75%. I am currently 81, and although I am dealing with some bowel irregularities post radiation, I can live with them. I remain fairly active; skiing, golf, squash and participating in my "Butts" exercise program. Eat healthy, exercise and enjoy life to the fullest as you never know when you might be run over while crossing an intersection.