Also,Rose - go to the American College of Radiation Oncologists. A few years ago I read that the 10 year outcomes for surgery and cyberknife are THE SAME. At 71 that puts your husband at 81 - not a decrepit old man but not a young one either, right? My symptoms from RP - complete impotence even with meds, occasional incontinence and chronic constipation ( NEVER had it before surgery) which 3 specialists cannot figure out. If you have an active sex life it is something to consider.
My business partner just had cyberknife ( age 72, no hormones since Decipher test was favorable. 5 treatments and so far he’s doing fine. The Doc told him that if PSA RISES in future, seeds will finish the job.