Overactive bladder is not always bladder infection induced. Watch the movie!
The incontinence associated with a Radical Prostatectomy is usually stress incontinence which is different from the irritative symptoms associated with O.A.B. or Interstitial Cystitis.
The incontinence associated with Radiation Therapy for prostate cancer is very much similar to that of Overactive Bladder and the treatments for O.A.B. will often times be effective for Radiation induced cystitis.
Prostate Diaries 
Thank you for that. I have some incontinence related to SBRT radiation. I am hopeful that the answer will be helpful and not land me into a hospital bed for days on end.
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Only 12 % chance of extended symptoms.
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