A clinical observation was made on 13 cases of pediatric urolithiasis admitted to the Department of Urology. Han Il Hospital during the period from Jan., 1971 to Dec., 1975, and the following results were obtained.
1) Among 78 cases of pediatric in-patient, 13 cases were pediatric urolithiasis, 10 cases were male and 3 cases were female.
2) Age distribution was between 2 and 13 years, showing the highest incidence in 7yrs (23. 0%).
3) The etiology of urinary tract stone : 2 cases in congenital anomaly, 8 cases in idiopathic, 1 case in foreign body, 1 case in immobilization, 1 case in recurrent infection.
4) Locational distribution of urinary tract stone was 5 cases in ureter, 4 cases in bladder, 3 cases in urethra, 2 cases in kidney.
5) The largest stone extracted was 2.0cm in size.
6) The common clinical manifestation of upper urinary tract stone included flank pain (71.4). hematuria (57. 1%) and lower urinary tract stone included painful urination (85. 7%), frequent urination (71.4%).
7) The most frequent method of treatment was lithotomy(57%).
8) The results of chemical analysis of 9 urinary calculi showed ca. oxalate in 33.3%, cal. Phosphate +oxalate in 33.3%.
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