[Percutaneous treatment of renal cysts with iodinated povidone injection. Long-term clinical course].

At present there are several minimally invasive options for the treatment of symptomatic simple renal cysts. One of them, the percutaneous puncture with injection of sclerosant substances, has offered good results. Our study has been conducted in 15 patients with symptomatic simple renal cyst treated by evacuant percutaneous puncture and povidone-iodine injection as sclerosant agent, and makes a short- and long-term evaluation of the results obtained using this procedure. Complete cyst recession with no ultrasound relapse during follow-up was seen in 13 cases (86.5%). Only two patients showed a persistent residual cyst that caused no symptomatology. The easiness of performance, absence of complications and good results obtained make this technique a valid option for the treatment of symptomatic renal cysts.