When prostate cancer spreads to the bladder,how much longer before the disease takes their life?

a friend has had prostate cancer for about 8yrs. and it has sspread to his bladder 4 months ago.How much longer before this disease will take his life?He is 87 yrs.old

When prostate cancer spreads to the bladder,how much longer before the disease takes their life?
It all depends on the person and how bad it is and how strong the person is. My dad had prostate cancer for many many years and lived to be 90. They have very good treatments today.
Reply:As soon as they open you up it spreads all over.
Reply:Unfortunately not long once cancer has been confermed spread from one organ to the other chances are it has hit more than one place already. As of time left to live our days are only numbered by god so the only prediction would be soon. Everyone is differant and every disease affects humans in differant ways. Good luck to you and your friend the best you can do now is keep him comfortable and be there for him.