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Genitourinary Cancer
Hospital  >  Care Programs  >  Odette Cancer Program  >  Genitourinary cancer care  >  Prostate cancer care  >  Patient education for prostate cancer  >  High Dose Rate (HDR) Brachytherapy  >  What are the side effects of this treatment?
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What are the side effects of this treatment?

What do I need to know about my brachytherapy treatment?


This treatment delivers a high dose of radiation to the prostate which causes swelling. This has some short term side effects such as:

  • Discomfort passing urine
  • A need to urinate more often
  • Slower urinary stream with a risk of urine blockage which may mean you will need a catheter (<2% risk)
  • A feeling that you have not emptied your bowels
  • Blood in the urine or semen
  • Bruising or discoloration of the scrotum and penis

Other symptoms that you can have, and may need medication to help are:

  • Impotence (the inability to have an erection)
  • Decreased sexual satisfaction
  • Lower volume of semen
  • Diarrhea or pain with bowel movements
  • Rectal bleeding
  • Pain when urinating
  • Incontinence (rare)

You will get prescriptions to help you empty your bladder more easily and for pain.

In very rare cases there may be serious damage to the rectum and bladder which may need a surgery to fix this.


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