We describe the results of prostatic balloon dilation in 7 patients with a follow-up of 9 months. Symptom scores dramatically fell in 5 patients (success rate 71%), which is confirmed by a significant improvement in peak flow in 4 of them. Two patients failed to improve and needed a subsequent intervention which revealed a stage A2 prostatic carcinoma in one. During subsequent open prostatectomy, a condition analogous to dilation with the Deisting dilator was seen. We conclude that the indications and results obtained with the balloon dilator are similar to those with the Deisting dilator.