Factors that influence the success rate in sclerotherapy of simple renal cysts with polidocanol

Aim: To evaluate the efficacy of aspiration and sclerotherapy with polidocanol (ASP) of symptomatic renal cysts and to assess factors that influence the success rate. Subjects and methods: 54 patients with 61 cysts were treated with this method. The diameter of the cysts ranged from 5 to 13cm. The technique consists of puncture with 0.8–1.2mm Chiba needles, aspiration followed by injection of sclerosing agent (polidocanol 2–3%, 2–6ml).The efficacy was assessed 6 weeks later, with a decrease of 90% or more in volume being considered succesful. If the residual volume was larger then 10% a new session was performed…