Everyone's situation will be different, but I elected to have mine removed 12 1/2 years ago. Don't remember the exact number but the Gleason rating was high in one area. One of the reasons, I selected removal is because I could do radiation if I had any problems down the road. About 4 years ago, my PSA started to rise, so I did two months of radiation and the PSA has dropped down to almost zero ( knock on wood ! ). Still hanging in there !