A competent, modern textbook on pediatric urology must encompass more than just a description of morphological anomalies and techniques for surgical repair. To reflect the true state of the art, it must contain a sophisticated integration of information from many disciplines. The present-day pediatric urologist thinks in terms of genetic, metabolic, endocrinologic, neurologic, psychologic, oncologic, and nephrologic disease factors. A new text devoted to pediatric urology muust therefore incorporate a huge volume of information in order to justify its relevance.