welcome to Healthcare magic.
in spine is common problem in prostate cancer
, It is staged as stage IV which is advanced stage as you rightly mentioned.
therapy has been reported to be effective in palliating painful bone metastase with response in 80-90% patients.
Apart from this hormonal
therapy are very effective in prostate cancer which control growth of tumor and releive symptoms.
Survival depends on so many fators like general condition of patient,type number and distribution of metastasis etc. Studies report that around 25% patient with stage 4 disease will survive 5 years or longer.