Korean J Urol.  2001 Aug;42(8):781-787.

Comparison of ESWL Monotherapy with EDAP LT-01 and Storz Modulith SLX for Staghorn Calculi

• Lim SD
• Seo IY
• Rim JS

Abstract

PURPOSE: Extracorporeal shock wave lithotripsy (SWL) has been established as the treatment of choice for the urinary stones. But, for the treatment of staghorn calculi, the efficacy of this therapeutic procedure is controversal. We intended to study the therapeutic results and the usefulness of ureteral stent between 2 types of lithotriptor, EDAP LT-01 and Storz Modulith SLX.
MATERIALS AND METHODS
Sixty cases were diagnosed as staghorn calculi from February 1990 to December 1998. Among them, 31 patients were treated with EDAP LT-01 SWL (group A) and 29 patients with Storz Modulith SLX SWL (group B). We inserted a double-J stent in 45 patients that consisted of 24 patients from group A and 21 patients from group B. The number of treatment sessions, complications and success rates were compared regarding each SWL and volume of the stone.
RESULTS
The success rates of each SWL were 70.9% in group A and 75.9% in group B. The success rates, according to staghorn morphology, were 71.4% and 85.7% in partial staghorn of group A and B. The average shock wave sessions were 12.0 and 7.4 in partial staghorn of group A and B. The success rates, according to staghorn volume, were 67.8% and 88.9% in less than 60cm3 of group A and B. The average shock wave sessions were 12.6 and 9.6 in less than 60cm3 of group A and B. The findings were statistically significant between the two groups in less than 60cm3 or partial staghorn. After SWL, incidence of steinstrasse was 12.5% and 33.3% in the double-J stent inserted patients of group A and B.
CONCLUSIONS
SWL could be a method of primary treatment for staghorn calculi. Storz Modulith SLX SWL was more effective than EDAP LT-01 SWL for staghorn calculi of which the volume was less than 60cm3. Placement of ureteral stents would be effective in the treatment of staghorn calculi by EDAP LT-01 SWL and not in Storz Modulith SLX.

Keyword

Renal stone; Shock wave lithotripsy; Lithotriptor

MeSH Terms

Calculi*
Humans
Incidence
Lithotripsy
Shock
Stents
Ureter
Urinary Calculi