The prostatron transurethral microwave device in the treatment of bladder outflow obstruction due to benign prostatic hyperplasia.

There is currently considerable interest in the development of non-surgical means of managing bladder outflow obstruction due to benign prostatic hyperplasia (BPH). We report the results of a 1-year follow-up of 140 men (mean age 67.2 years) presenting with symptoms of bladder outflow obstruction treated for 1 h in a single session by the Prostatron transurethral thermotherapy system. Symptom scores, using a system modified from Boyarsky, fell from baseline values of 23.7 to 11.6. Maximum urinary flow values increased from a mean of 10.1 to 12.4 ml/s. Although residual urine volumes decreased slightly, this was not statistically significant. A self-administered postal questionnaire returned by 114 patients 1 year after Prostatron treatment, and by 87 patients of similar age who had undergone transurethral resection of the prostate (TURP) in the same institution, revealed that patient satisfaction regarding the outcome of each procedure was higher for TURP than thermotherapy. However, more patients suffered sexual dysfunction after TURP than after microwave treatment. It was concluded that although treatment with the Prostatron device produces subjective and objective improvement in a proportion of patients with BPH, more work needs to be done to improve the overall results and to pre-identify patients who experience little or no benefit from this therapy.