We visited with our 81 year old brother in law this past week. He was diagnosed with prostate cancer 7 years ago and was apparently cured by his treatment. He now does 6 mo follow up PSA and blood which soon changes to yearly. He is not taking any cancer or prostate meds.
He is a man of few words but I was able to get out of him that he received a bunch of radiation treatments and had a chemo bag which supplied 10 weeks of chemo during the radiation timeframe. He received this treatment in Sioux Falls SOuth Dakota by a doc whose name he did not recall.
I was happy for him but jealous because my husband has never been cured and we have been all over the country for various treatments that failed. Brother in law lives in middle of nowhere and it’s a big deal to drive to Sioux Falls.
Other brother in law lives in North Dakota and a 17 years survivor with only radiation done locally and no other meds at age 85.
These two are among the handful of men I know who had prostate cancer and consider themselves cured from treatments done without having to travel far from home.
Is it possible to have chemo again after radiation? 
Off clinical trial, on to radiation and chemo
Prostatectomy, radiation, chemo, Eligard. What's next?
Persistent dry cough after Chemo and radiation
To Radiate (the Prostate) or Not to Radiate (the Prostate): That is the Question.
Found early, fully contained in prostate, Hit hard early it can be cured, or held back till they die of something else. Stage 4 ,metastasized like almost every one here, that isn't possible at this time. We just have to keep fighting the battle. All of us respond to each treatment differently. Good luck to you and your husband. Some times life doesn't seem fair..
Doug-AZ
At least for us the original verdict for Stage 4 metastasized was seen by Doctors as prognosis - waiting to die! So much has changed for the better. Much better.