Radiation is the usual step for many who are in the situation like the one you are in. But there is also the option to do hormone treatment alone. For many people the side effects of the hormone therapy are more unpleasant than the side effects of the radiation. it is an individual decision whether to do either, both, or none.
It is important to get a good read on your PSA doubling time. That, along with your general physical health, will help guide you toward an understanding of how aggressive to be. If I were in your situation I would get PSA's not less than every other month, and maybe even monthly and then after another reading or two you can see more clearly how fast it is rising.
Based on the last two readings (which is *not* enough for a valid measurement) your psa is rising about
60% per year, so your doubling time is around 17-18 months, which is pretty close to indolent as these things go. If this rate holds, you could arguably go 8 years plus or minus without having any symptoms. At this rate your PSA would be around 24 in ten years.
But if you go the route of no treatment you should know two things:
1.) the chances of success for radiation therapy go down significantly as PSA rises.
2.) keep a close watch on things as sometimes the growth rate goes up without warning.
Post Edited (proscapt) : 8/6/2015 12:55:32 AM (GMT-6)