steveinErie-
Yes, there are studies that show the efficacy of salvage therapy after primary radiation. I have dozens in my files. Here are a few articles that discuss this, and include links to peer-reviewed studies in professional journals:
Most of the recurrences after primary radiation failure are salvageableSalvage SBRT for local recurrence after primary radiation therapy (RT)Salvage Low Dose Rate Brachytherapy (LDRBT) after primary LDRBT failureOutcomes of salvage prostate cryotherapy stratified by pre-treatment PSA: update from the COLD registrySalvage Radical Prostatectomy for Radiation-recurrent Prostate Cancer: A Multi-institutional CollaborationThe best salvage options include focal ablation, focal brachytherapy, and whole-gland SBRT. Salvage surgery is certainly an option as well, but there are only a handful of surgeons who have the experience to do it well. Until about
the last 5-10 years, failure after RT was considered to be unsalvageable because the radiation had already treated the prostate
plus an area outside of it, so failures were
assumed to be due to distant metastases rather than local failure. New imaging technology revealed that up to half of the failures after IMRT were local-only and still could be salvaged.
I agree with your doctor who advised you to make your decision based on the primary therapy. Here's why. Your kind of prostate cancer, which is "favorable intermediate risk," has 95+% chance of being cured by primary therapy. Take a look at these, for example:
/pcnrv.blogspot.com/2016/09/5-year-sbrt-trial-high-cancer-control.html/pcnrv.blogspot.com/2016/08/high-dose-rate-brachytherapy-hdrbt.html(only about
20% of the few failures were
local-only failures in those therapies)
As Michael said, you have plenty of time to make this decision. Here are some questions you may want to ask yourself:
• Do I need to see a pathology report to tell me how contained it was?
• If I choose radiation, can I live with the fact that PSA goes down over a number of years, with bounces along the way, and never becomes undetectable?
• If the pathology is adverse and PSA does not become undetectable, am I prepared to undergo adjuvant radiation with all the potential side effects that entails? (Your doctor has hopefully run a nomogram showing the probability of this happening)
• If the radiation doesn't work, am I prepared to have a biopsy and possible focal brachy re-treatment?
• Which bothers me more - the potential for incontinence and ED after surgery or the potential for retention and irritative effects after radiation? (given the probabilities of those side effects)
• Do I understand the other possible side effects of surgery? (e.g., infection, hernia, climacturia, penile shrinkage, stress incontinence, etc.) Am I prepared to take on penile rehab?
• Do I understand the other possible side effects of radiation? (e.g., fatigue, proctitis, hemorrhoids, frequency, urgency, burning while peeing, ED).
• Am I prepared to undergo radiation therapy and its side effects?
• Am I prepared to undergo surgery and its recovery?