Minimally invasive treatment of ureteral calculi in children
Mustafa Ozgur Tan1, Ustunol Karaoglan, Sinan Sozen
1Faculty of Medicine, Department of Urology, Gazi University, Ankara, Turkey. mozgurtan@yahoo.com
Insights
Shock wave lithotripsy (SWL) is effective for pediatric ureteral stones, especially smaller ones. Ureteroscopy offers a high success rate for lower ureteral calculi, including SWL failures.
Area of Science:
- Pediatric Urology
- Endourology
- Nephrolithiasis Treatment
Background:
- Ureteral calculi in children present a significant clinical challenge.
- Treatment options for pediatric ureteral stones include shock wave lithotripsy (SWL), ureteroscopy, and open surgery.
- Evaluating the comparative efficacy of these modalities is crucial for optimizing patient outcomes.
Purpose of the Study:
- To retrospectively analyze the efficacy of SWL and ureteroscopy in treating pediatric ureteral calculi.
- To identify factors influencing treatment success rates in children with ureteral stones.
Main Methods:
- Retrospective review of 67 children (71 ureters) treated for ureteral calculi between 1990 and 2005.
- Analysis of initial treatment methods: SWL (80.3%), ureteroscopy (11.3%), and open surgery (8.5%).
- Assessment of stone-free rates based on treatment modality, stone location, diameter, and burden.
Main Results:
- Overall stone-free rates were 75.4% for SWL, 93.3% for ureteroscopy, and 100% for open surgery.
- SWL stone-free rates varied by location: 74.1% (upper), 100% (middle), 75.9% (lower).
- Increased stone diameter and burden adversely affected SWL success; ureteroscopy achieved a 93.3% stone-free rate for lower ureteral calculi, including SWL failures.
Conclusions:
- SWL can be a suitable initial treatment for most pediatric ureteral calculi, contingent on stone burden.
- Ureteroscopy demonstrates high efficacy for lower ureteral calculi, serving as an effective salvage therapy after SWL failure.
Abstract:
A retrospective analysis was done to determine the efficacy of shock wave lithotripsy (SWL) and ureteroscopy in the treatment of paediatric ureteral calculi. We reviewed the records of 67 (35 boys, 32 girls) children (71 ureters) admitted to our clinic for treatment of ureteral calculi during 1990-2005. The initial treatment method was SWL in 80.3% (57 ureters), ureteroscopy in 11.3% (eight ureters) and open surgery in 8.5% (six ureters) of the renal units. The mean age of the patients was 10.67 +/- 4.4(1-16) years. The stone-free rates after SWL for upper, middle and lower ureteral calculi were 74.1, 100 and 75.9%, respectively. Increased stone diameter (P = 0.014) and/or burden (P = 0.002) were found to be significant factors that had an adverse affect on the stone-free rate after SWL while the success rates of SWL were independent of location. Including six patients (seven ureters) with failed SWL, a total of 14 patients (15 renal units) subjected to ureteroscopy for lower ureteral calculi yielded a stone-free rate of 93.3%. Thus, the overall stone-free rates after SWL, ureteroscopy and open surgery were found to be 75.4, 93.3 and 100%, respectively. Depending on the stone burden, SWL might be a good option for initial treatment of most ureteral calculi in children. Ureteroscopy offers a high success rate for lower ureteral calculi, including SWL failures.
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