Fig. 1

Value of ultrasound in the initial assessment of the pediatric urinary tract a dilatation of the renal pelvis, central and peripheral calyces with poor corticomedullary differentiation (P3 UTD). b Multiple variable sized cysts in a case of multicystic dysplastic kidney. c Enlarged echogenic kidney with small cysts representing autosomal recessive polycystic kidney disease. d Ureterocele. e Double ureters near the urinary bladder. f Urinary bladder wall thickening and trabeculation in a case of posterior urethral valve