Results of systematic screening for minor degrees of fetal renal pelvis dilatation in an unselected population

OBJECTIVE: The purpose of this study was to determine the incidence of minor degrees of renal pelvis dilatation that-is detected by antenatal ultrasound scanning in an unselected population and its value in the prediction of significant uropathies. STUDY DESIGN: This prospective study was conducted over a 24-month period. Infants with an anteroposterior pelvic diameter of greater than or equal to4 mm in the second trimester and/or greater than or equal to7 mm but