I just read about risks to the TURP and they are as follows:
A small number of men (about 1%) say they are completely unable to hold back their urine after the surgery.
Some men find that they can still hold in their urine after the surgery, but they tend to leak or dribble.
Also, some men have erection problems following this surgery. I had this done about 20 years ago and did not have any of these side effects. I do have retrograge ejaculation (into the bladder) which is not problem at all to me and my wife loves it.
Good luck and I hope this helps.