Urolithiasis in children. Presenting signs, etiology, bacteriology and localisation.

Based on a personal series of 310 observations, the authors have studied the presenting signs, the etiology, the urinary bacteriology and the localization of the stone in children with urolithiasis. Urinary tract infection is the presenting sign in 55% of the cases, hematuria in 23% and abdominal pain in 20%. Urinary malformation is associated in 26% of cases, whatever the age at diagnosis. The urinary bacteria found in 55% of cases is Proteus. Localization was in the kidney in 228 cases, in the ureter in 71 cases, the bladder in 45 cases and in the urethra in 5 cases.