I think the reason that proton beam, Nano Knife and other new-fangled treatments for PCa are not customarily used is because medics in general regard them as “unproven”.
However, if you are totally against radical prostatectomy and are prepared to pay, you might consider Nano Knife (a similar operation to template biopsy), available in London at the Princess Grace Hospital @ £20,000 or Offenbach, Germany @ €16,000. There is a very good chance of success with a small localised tumour with minimal side effects. Moreover, that procedure does not preclude other subsequent ones if not a total success.
I had a Retzius sparing robotic laparoscopic prostatectomy three weeks ago and have no continence problem at all, but they don’t tell you your dick might shrink by up to two inches! Allegedly, most of the length is supposed to return after a year, and potentially erectile function as well. No sign of any of that yet though, so we live in hope!
Best of luck whichever path you choose.
Edited by member 28 Jun 2018 at 07:30
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