I had a localised prostate cancer and had robotic surgery in Oxford.
Before the operation I measured my penis as I had been told I would loose length.
After the operation I had a few problems with blood clots in my bladder but only for a couple of weeks, but had a night time erection a few hours after the op.
At the follow up appointment after six weeks I was told I had positive margins and was taken aback. But the surgeon said he was not worried as it was likely he got everything, and my PSA was low. Also the pathology had gone from a Gleason 6 to a 7 (3+4)
Today I had my 7month follow up, PSA undetectable ( <0.01). I have largely gained full bladder control, erections are 95% of what they were before (very usable),and absolutely no loss of penis dimensions.
I would say that I was back to normal, and likely to be the first man in the family to survive a prostate cancer diagnosis.
I hope all you going through this nasty disease have the same luck as me, and will soon see the light at the end of the tunnel.