[Ultrasound diagnosis of persistent varicocele after sclerotherapy]

252 consecutive patients with left-sided idiopathic varicocele were admitted into this prospective study. 30 patients did not receive a transcatheter sclerotherapy on account of their venous morphology on the selective phlebogram. Ultrasound examinations including Doppler sonography were performed before and 1, 3, and 6 to 12 (average 10) months after transcatheter sclerotherapy of the varicocele. For evaluation of therapeutic success the maximal diameter of the pampiniform plexus, the maximal diameter of the largest vein of the plexus, and, by means of Doppler ultrasound, reflux were measured. A continual decrease of these parameters was observed approximately one year after sclerotherapy. 9% of patients (20 patients) had a persisting varicocele. A premature decision for repeat sclerotherapy or operative correction of possibly persisting varicoceles can be avoided by employing a sonographical follow-up of more than 10 months.