Well current thought by the top cancer docs is to
1. Radiate known sites
2. Use the Eligard / Lupron injections to keep (still undectable cancer cells in the body from) getting growing
3, Using the Erleada / Zolodex / Xtandi class of drugs to block the receptor sites so tertosterone (the fuel for cancer to grow) cannot get to the cells thus sort of starving them so they cannot grow any more or spread.

Let me know if this helps. I should add that until about 2018 (according to my hematologist/oncologist standard therapy would be to just radiate and add the Eligard / Lupron 6 month shots, but then they realized that it did not totally stop the tertoserone from fueling cells so they started adding the Erleada class of drugs to block the receptor site and thus starving the cells even more. The goal really is to reduce the tertosterone in the body to as close to NONE as possible---but down size is that the drugs make you more tired (when walking or exercising {and I walk 9 miles a day} and supposedly they weaken bones [leading to possible breaks] and other things but everyone is different. I have to say that getting a little tired 5 miles into a walk is the ONLY adverse effect I had.