Treatment of hydrocele testis by injection of tetracycline.

In a prospective study 27 hydroceles were treated with single aspiration and injection of 500 mg tetracycline. The median observation period was 6 months (range 3-15 months). One month after therapy 9 recurrences were observed; but 5 disappeared spontaneously during the next 2 months, giving an overall success rate of 85% (95% confidence limits 66-96%). No serious complications occurred. Dilution of tetracycline in lidocaine prevented acute scrotal pain. Sclerotherapy with tetracycline is efficient, easy and inexpensive and, therefore, economical and beneficial for the patient.