Ureteral Calculus Monotherapy with Second-Generation Lithotripter*

Abstract
We report our early experience with extracorporeal shock wave lithotripsy (SWL) using the Siemens Lithostar lithotripter for in situ destruction of 185 ureteral stones in 174 patients. The immediate stone fragmentation rate was 88%, and the 1-month clearance rate was 94%. Repeat treatment sessions were required in 18% of patients, and no major complications were observed. According to these results, we believe that in situ SWL monotherapy is an effective and noninvasive method for the treatment of ureteral stones.