Our primary purpose in this report is to evaluate cystourethrography as a method for investigation of organic uropathy in enuretic patients. The satisfactory presentation of this objective is dependent on a clear conception of the etiology of enuresis. It will therefore be necessary to interpret and clarify the various causative factors which constitute this problem. Urinary continence is dependent on four factors: An intelligence quotient adequate to appreciate the social necessity and hygienic desirability of controlling the time and place of voiding. Proper and sufficient habit training to condition urination and voluntary control. The patient must be free of specific neurotic and psychotic symptoms and have an emotional status consistent with his age group. A normal voiding mechanism is essential for normal function. In the child, the anatomic and physiologic development must be accordant with the chronologic age. Urinary continence may be maintained even though one