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Abstract

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#ÃÊ·Ï#
Purpose: Shockwave lithotripsy(SWL) and ureteroscopic manipulation became the
standard treatments for ureteral stones in recent years. There still exists significant
debate as to the most appropriate treatment modality for ureteral stone management.
Materials and Methods: From January 1994 to December 1995, 651 patients of ureteral
stones were treated and 589 patients were retrospectively reviewed excluding 62 patients
for incomplete follow ups. Four hundred and forty-two patients were treated with SWL
using MPL 9000 with ultrasonic guidance, 115 patients with ureteroscopic manipulation
using 7.9 to 11.5Fr rigid and semirigid ureteroscopes.
Results: In SWL treatments, overall stone free rate was 74.7% with one session,
Stone free rate was significantly affected by the size of stones. Stone free rate was
83.6% when the stone was smaller than 1.0§¯ and 42.1% when the stone was larger
than 1.0§¯ Stone free rate after second SWL session was 84.4% and 90.3% after third
session. The stone free rates according to the site of stones were 72.4(proximal),
70.0(mid), 80.2(distal), respectively. In ureteroscopic manipulation, overall stone free rate
of 87.8% was obtained regardless of the size of stones. The success rates according to
the location of stones were 75.0(proximal), 94.6(mid), 86.4%(distal), respectively. Open
ureterolithotomy was performed in 32 patients with 100% success rate.
Conclusions: In our study, the size of stones was the most important factor
influencing the success rate of SWL treatment for ureteral stones. We consider
ureteroscopic manipulation as the first line treatment modality when the stone is larger
than 1.0§¯, especially in distal ureter, Proper selection of patients for in situ SWL or
ureteroscopy would improve the results of initial treatment.

Å°¿öµå

Ureteral stone; Shockwave lithotripsy; Ureteroscopy;

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