[Transurethral microwave therapy of benign prostatic hyperplasia. Results after 1-year follow-up].

We describe the results after one year follow-up of the first 17 patients treated with transurethral microwave therapy at the University Hospital in Tromsø. We used the Prostatron (Technomed International), a microwave generator delivering heat to the prostate through a water-cooled transurethral catheter. After six weeks we recorded significant improvement in symptom score, residual urine and peak flow rate. There was continuous improvement in all recorded parameters until the last control 13 months after treatment, except in the case of symptom score, where the level was the same after 13 months as after six months. We found a high incidence of urinary tract infections after treatment, owing to liberal use of prophylactic transurethral catheters. In one patient we also recorded retrograde ejaculation as an adverse effect of treatment. To our knowledge this has not been reported earlier.