Good question about the PET Scan. If the reason he had the orchiectomy was prostate cancer vs testicular cancer, I wonder why his urologist did not do the PET Scan pre-surgically? If it was prostate cancer, the urologist would want to know if the cancer was "prostate confined", or if in fact it was spreading to lymph nodes and/or bones. You unfortunately don't know, and for some reason radiation was done instead of prostatectomy...again, assuming he has prostate cancer (seems he does). If he did have prostate cancer, "why" did he go for radiation "first", when that is customarily done "after" radical prostatectomy if/when there are new, detectable and increasing PSA levels. Radiation "first" just made it much ore difficult to surgically remove the prostate if needed, now that it is scarred and is like a chunk of concrete. Please offer some answers and more clarity on what is going on with him. Good luck to you and him.