This is a preliminary report of a study to ascertain the frequency and types of anomalies of the urinary tract in children in a consecutive series of necropsies performed at the Children's Memorial Hospital in Chicago, from June 18, 1927, to May 18, 1928. During the eleven months there were 3,481 admissions to the hospital, which include 1,513 admissions for tonsillectomy only. Death occurred in 258 patients, of whom 153 were examined post mortem. Eighty-five per cent were under 4 years of age. Definite anomalies of the urinary tract were found in 20 cases, an incidence of 13 per cent.
Numerous articles on urinary conditions in childhood have appeared in the literature, especially during the past few years. In 1879, Englisch1 found 65 cases, or 5.4 per cent, of congenital hydronephrosis in 1,200 cadavers of infants. In 1924, Bugbee and Wollstein2 described 117 lesions of the urinary tract