Effect of Percutaneous Aspiration with Sclerotherapy of the Simple Renal Cyst

Kim, Hyun Hag; Min, Kyung Dai; Kwon, Dong Deuk; Oh, Bong Ryoul; Park, Yang Il

Abstract

PURPOSE
Recently, a percutaneous aspiration with sclerotherapy has become the treatment of choice for the symptomatic, large, and simple renal cyst because of its minimal invasiveness and high effectiveness. The recurrence rate of a percutaneous aspiration only, was reported to range from 30 to 70%. This study was performed to evaluate the effects of percutaneous aspiration with sclerotherapy.
MATERIALS AND METHODS
The results of the treatment in 36 cases of simple renal cysts from October 1993 to December 1999 were evaluated. The symptoms associated with simple renal cysts were: flank pain or discomfort (50%), none (47.2%) and a palpable mass (2.8%). The simple renal cysts were treated with a percutaneous aspiration only in 6 cases, a percutaneous aspiration with sclerotherapy using 99% ethanol in 21 cases or a 10% minocycline solution in 9 cases. All patients were followed up by ultrasound for 6 to 56 months (mean 18 months).
RESULTS
Complete collapse, and partial collapse rate of the renal cysts were 1/6 (16.7%), 2/6 (33.3%) in the aspiration only group, 6/21 (28.6%), 14/21 (66.7%) in the 99% ethanol group and 3/9 (33.3%), 4/9 (44.4%) in the 10% minocycline solution group, respectively.
CONCLUSIONS
Therefore, a percutaneous aspiration with sclerotherapy using either 99% ethanol or 10% minocycline solution appears to be an effective way to the prevent re-accumulation of cystic fluid. However, the success rates in the percutaneous aspiration with sclerotherapy using 99% ethanol and 10% minocycline solution were not significantly different.