My dad went to California for Proton treatments then last year my uncle also went & they both are doing fine. There is no surgery and my dad said it doesn't hurt but it does take a couple months for the procedure. Just thought I would share in case it is an option for some.
Here is what there web site says;

Proton therapy is a precise form of radiation treatment for prostate cancer that minimizes damage to healthy tissue and results in fewer side effects. This painless treatment has been proven to improve control of your cancer and reduce complications during and after the proton therapy procedure.

Having treated over 12,000 patients the Proton Treatment Center at Loma Linda University Medical Center has pioneered the use of proton therapy to treat prostate cancer and tend to the mind, body, and spirit of our cancer patients.