The increasing attention of the medical and surgical profession to pathologic conditions of the urinary tract in children and the possibility of more than incidental association of bone suppuration and renal calculi suggested the advisability of making this report.
UROLITHIASIS IN CHILDRENYoung 1 stated that urolithiasis is very common in children in some countries, but that it is far less common in children in America. Holt2 noted that at necropsy small stones were found in the urinary tract of children in the first two years of life. Rafin 3 reported 322 cases in infants. Bokay 4 collected 1,836 cases of calculi in infants and children. Twenty-five per cent of Thomson's 5 3,492 cases of urinary lithiasis in China occurred in children under 10 years of age, the youngest being 2 years old. Thomas and Tanner 6 collected 197 cases of calculi reported in children in this country. They reported six additional cases of their own, and expressed their belief that the condition is common. Johans¬ son T reported the finding of a right renal calculus and a left ureteral calculus in a child aged 5. Brown 8 reported the finding of a pure xanthine stone in acid urine of a probably rachitic boy, aged 3, without evidence of preceding infection of the urinary tract. This suggested that the causative factor was a metabolic disturbance. Deherripon 9