Hi there....I'm not a cancer expert. My husband had prostate cancer and had his prostate removed. So what I'm gathering from your post is that you were diagnosed with bladder cancer and got treatment for it but they have now found that the cancer has spread to your prostate?
The goal is zero. Some cells are likely lingering. A second opinion never hurts, but radiation... Particularly, PBT proton beam is easier. Check out spaceoaor.com too. I am no vested interest other than I am dealing with it myself.