Treatment of simple renal cysts with single-session percutaneous ethanol sclerotherapy without drainage of the sclerosing agent.

Purpose: To evaluate percutaneous single-session sclerotherapy with ethanol without drainage of the sclerosing agent in symptomatic simple renal cysts that require treatment.

Patients And Methods: A prospective series of 30 consecutive patients with symptomatic simple renal cysts with volume of 280.3 +/- 365.