ABSTRACT
Renal anomalies may be the result of an arrest in development or a malformation. A complete understanding of the embryologic development of the genitourinary tract is a prerequisite for the evaluation of a child with a suspected anomaly. Anomalies of the urogenital tract are among the most common of all organ systems. Using real-time ultrasonography as a screening test in healthy infants, Steinhart et al found that 3.2% of infants had an abnormality of the genitourinary tract and half of these required surgical intervention.1 Shieh et al noted a 0.5% incidence of renal abnormalities using portable ultrasound screening of school-age children.2
