Effect of Percutaneous Aspiration and Repeated Sclerotherapy of the Simple Renal Cyst

Min, Sung Gi; Boo, Myung Seop; Jung, Jae Il; Choi, Ho Cheol; Min, Kweon Sik; Choi, Sung Hyup; Han, Sang Suk

Abstract

Recently the percutaneous aspiration and sclerotherapy has become the most advocated procedure for the symptomatic, large, and simple renal cyst because of its minimal invasiveness and high effectiveness. But the recurrence rate of the simple aspiration and sclerotherapy was reported highly (30-70%). We analysed the effect of percutaneous aspiration and repeated sclerotherapy of the renal cyst in 42 patients from Nov. 1989 to Apr. 1995. Sclerosing agent were 99% ethanol in 33 cases, minocycline in 4 cases, and only aspiration was done in 6 cases. The method of repeated sclerotherapy was achieved about 2.2 times as which aspiration and instillation of sclerosing agent in standing of 8.3 Fr. pigtail catheter during average 2.5 days. After follow up for 17.4 (6-59) months, the complete collapse rate of the renal cyst was 78.7% in the using group of 99% ethanol. 25% in minocycline, 16.696 in the aspiration only. The complete collapse rate according to the times of sclerotherapy was 45.5% in one times, 78.6% in two times, 92% in three times. In conclusion, the sclerotherapy of the simple renal cyst with 99% ethanol was most effective, and we can be expect that the rate of complete collapse has been increased in the repeated sclerotherapy.