Cooleymountain,
You are correct that one part of the story is distant metastasis. It doesn't matter if you have RP or RT. If the cancer is lurking elsewhere you have a serious problem. Up until very recently if it was discovered in one or two places it was assumed it was probably in several hundred places and HT was the only way of slowing it down. Just recently if it is in one or two places it will be treated with SABR and this may provide a total cure.
Another possibility is cancer cells just outside of the prostate. These won't be removed by RP, but will get sufficient RT to kill* them.
As far as cancer in the prostate is concerned RP will definitely remove it. RT will kill* all of it.
(* Kill. It is possible that some will survive but I think it is a very small chance with modern RT)
Completely separate to this is the possibility of a brand new tumour, Old Barry had this. I don't know how common it is. It can not be irradiated again, and RP on a fried prostate is pretty much guaranteed incontinence. For old Barry it was treated with HIFU.
So fracij is right if the prostate is removed, you have eliminated the chance of any cancer remaining in prostate and any chance of a tumour starting again. But RT has the advantage in clearing the prostate bed.
If you are T1,T2 don't worry too much about the prostate bed. If you are T3 do worry about it.
I would argue that the possible side effects of RP are not worth the risk in any situation. The side effects of RT plus two years of HT, are bearable. Others have a different view on side effects, so in the end that is your personal opinion.
Apparently in the end both give you about a 70% chance of full remission, so it doesn't really matter which you choose.
I was not offered RP, my cancer was T3 with extra capsular extension. So cancer cells were almost certainly in the prostate bed.
Nowadays no one with a cancer diagnosis puts on a hair shirt in penance. But many say they will change there diet to a miserable diet, and they opt for attacking the cancer and their bodies with sharp knives (my view of surgery). I am of the opinion that these are motivated by the same attitude as hair shirt penance. Try to follow the logic not the emotions. RP and RT are both valid treatments just choose one for the right reasons.
Edited by member 19 Dec 2022 at 11:43
| Reason: Not specified