Hi Gaz ,Your situation sounds similar to mine,you can read my profile, except I'm on Enzalutimide as a first line treatment after failed RP plus 3 monthly injection .My PSA dropped from a rapidly increasing 28 after RP to undetectable within 4 weeks of Enzalutimde and there it has remained for 28 months I also had 33 treatments of RT six months after starting salvage ADT .I'm having a CT scan tomorrow and a bone scan in December for monitoring purposes and to decide the way forward as I am in full remission .They will check the status of the affected lymph nodes and I may be taken off Enzalutimde .The real test is how we fare after coming off the hormone treatment. Having had RP is a good thing as there is a train of thought that it removed the 'mothership' so to speak and that the migrated cancer cells get their chemical signals from the cancerous prostate gland which causes them to proliferate .There is a trial underway that is testing this theory hopefully it will provide the answer to the best way to treat those who have advanced cancer.