After I had my prostate removed my PSA was never lower than .37. After that I had 7 weeks of salvage radiation and my PSA nearly doubled during that 7 weeks. Then I got an Oncologist that specialized in Prostate Cancer. When he saw the PSA numbers and the number of consecutive increases me said that he would have expected multiple metastases but my PET/CT scan was clear. Nothing showed until my PSA was 6.56, and then there was just a single metastasis in a lymph node in my chest.