Hello Pistol and thanks for posting, 

Unfortunately, radiotherapy after surgery for prostate cancer can potentially cause side effects and doctors can't usually predict very well who will develop them to a bothersome extent. You can read some general information about radiotherapy for prostate cancer on our website at this link and on the website of another charity, Prostate Cancer UK here. 

Radiotherapy is often given everyday from Monday-Friday with weekends off over several weeks; four weeks sounds about the right sort of timeframe but this is something an oncologist (cancer doctor) who specialises in radiotherapy would need to confirm. And should you need it, they would go through possible side effects with you so you could decide what to do and give your consent if you wanted to go ahead.

The best source of information about any treatment in terms of the likely individual benefits and harms will come from the specialist team who know all about you, I can appreciate you wanting to look into things as much as is possible now but you probably can only go so far with it for the moment. 

Please give us a ring if you want to talk anything over, the number to call is Freephone 0808 800 4040 and we are around from 9-5 weekdays.

Best wishes,

Julia