[Minimally invasive treatment of symptomatic renal cysts].

PURPOSE To present minimally invasive treatment of symptomatic renal cysts and compare treatment efficacy of single-session percutaneous aspiration and sclerotherapy using 96% alcohol versus prolonged percutaneous drainage without sclerosing agents in the treatment of symptomatic non-parasitic renal cysts. METHODS A retrospective-prospective study, was conducted between January 2005 and May 2008, among 68 patients (both sexes) that were diagnosed symptomatic non-parasitic renal cysts and treated in Urology Clinic, Clinical Center University of Sarajevo. RESULTS Initial average volume of cysts did not significantly differ between both groups while final average volume was significantly lower in group of patients treated by prolonged catheter drainage. During three months follow-up, 25 cysts (41%) completely disappeared and could not be detected by ultrasound exam, of which 16 cysts (53,3%) were in the examinees' group with prolonged catheter drainage and 9 cysts (30%) were in examinees' sclerotherapy group using alcohol as sclerosing agent (p=0,244). None of the completely disappeared cysts have had recurrence during follow- up period. Probability of disappearing of cysts was well correlated with volume of the cysts in both groups. Probability was less for the large cysts with initial volume higher than 500 ml. Probability of disappearing of cysts for the group of the prolonged drainage was p=0,0449. CONCLUSION Percutaneous treatment is the first choice treatment of symptomatic renal cysts. Percutaneous treatment of symptomatic cysts is both safe and effective whether we use prolonged catheter drainage or aspiration followed by instillation and 2-hr exposure to 96% alcohol.