Childhood Urolithiasis: Urological Management of Upper Tract Calculi in the Era of Extracorporeal Shock-Wave Lithotripsy

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Abstract
Objective: To evaluate the management of urolithiasis in children since the development of extracorporeal shock-wave lithotripsy (ESWL). Methods: Between 1988 and 1994, 37 children, aged from 2 to 15 years (mean 10), with upper tract urolithiasis were evaluated and treated. Lithogenic metabolic disorders or anomalies of the urinary tract were present in 11 children (30%). Urolithiasis was multiple in 9 cases and bilateral in 2 cases. A total of 47 renal (30) or ureteral (17) stones were managed, of which 5 were partial or complete staghorn calculi. Initial treatment was surgery in 4 cases (1 nephrectomy, 1 partial nephrectomy and 2 pyelolithotomies) and piezoelectric ESWL in 43 cases. Results: The overall ESWL success rate was 82.2%, with auxiliary endoscopic procedures in 3 cases. ESWL failures required surgical stone removal in 5 cases, endoscopic ureterolithotripsy in 1 case and electrohydraulic ESWL in 1 case. Residual fragments after pyelolithotomies were also treated by ESWL. Conclusion: ESWL is the mainstay of treatment of childhood upper tract urolithiasis, but other therapeutic methods retain specific indications. Its application requires great vigilance and its long-term effects are uncertain. It is therefore important to rule out any underlying pathology and where possible to prevent further stone formation.

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