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A Clinical observation was made on 10 cases of childhood urolithiasis under 15 year-old who were admitted to the department of urology, Hanyang University Hospital during the period from May, 1972 to Dec, 1983. The results were as follows: 1. of 3482 cases hospitalized, 10 cases were urolithiasis in childhood giving ratio of 0.29%. 2. The favorable age was absent, but showed even distribution. 3. Congenital anomalies 2, metabolic cause 1, idiopathic cause 7 were recognized as etiologic causes. 4. Incidence of lower urinary stone was high, 70%. 5. The most frequent symptoms and signs were voiding difficulty, 4 cases. Hematuria, flank pain and bladder irritative symptoms were also noted. 6.The urine cultures were showed Klebsiella pneumonia in 1 case, Enterobacter aerogens in 1 case, Enterococci in 1 case and combined infection of E. coli and Enterococci in 1 case. 7. Stone analysis was showed calcium oxalate in 3 cases, combined stone of calcium oxalate and ammonium phosphate in 1 case and fibrinoid calculi in 1 case. 8. Recurred rate cannot be estimated because of the patient was not revisited to out-patient-department at all after discharge.
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