Long Term Follow-up Results of Laparoscopic Renal Cyst Marsupialization: Comparison with Alcohol Sclerotherapy

Seo, Ill Young; Jeong, Chan Sang; Jeong, Hee Jong; Rim, Joung Sik

Abstract

PURPOSE: Although percutaneous aspiration and sclerotherapy is a simple, noninvasive and cost-effective therapy for symptomatic renal cysts, the recurrence rate is high. Recently, a laparoscopy has been attempted on symptomatic renal cysts. To assess the clinical efficacy and safety of the laparoscopic cyst marsupialization, the clinical characteristics and operative parameters were evaluated, and compared with the results of sclerotherapy.
MATERIALS AND METHODS
Between November 1993 and February 2003, 71 patients with symptomatic simple renal cysts were treated with either laparoscopic marsupialization or sclerotherapy. Respectively, 26 of 31 laparoscopy patients and 27 of 40 sclerotherapy patients were followed-up over a 2 months period and included in this study. The laparoscopic marsupialization was accomplished with either transperitoneal (15 patients) or retroperitoneal approaches (11). The sclerotherapy was composed of percutaneous aspiration followed by an injection of 99% ethanol.
RESULTS
The clinical characteristics, including cyst size, location and laterality, were no different in either group. The mean follow-up durations were 19.7 and 18.1 months in laparoscopy and sclerotherapy groups, respectively. Comparing the laparoscopy with the sclerotherapy group, the operation time (106.2 vs. 15.3 min.), hospital stay (7.8 vs. 4.6 days) and complication rate (23.1 vs. 3.7%) were significantly decreased in the sclerotherapy group. However, the success rate (96.2 vs. 77.8%) was significantly increased in the laparoscopy group. With either the transperitoneal or retroperitoneal approaches in the laparoscopy group, there was no statistical difference in the operative time, hospital stay and complication and success rates.
CONCLUSIONS
For a symptomatic renal cyst, laparoscopic marsupialization is an effective therapy, with a high success rate on the long-term follow-up. The clinical results, according to the approach method, were not different for the transperitoneal and retroperitoneal approaches.