Longitudinal image of renal ultrasound scan performed at 12 months of age. The image shows a small-sized hyperechoic kidney, loss of corticomedullary differentiation, and multiple small cysts with a predominantly subcortical distribution (arrow), a feature that is highly suggestive of glomerulocystic renal disease. The kidney poles are represented as (+). A 10 - mm scale is represented by the horizontal bar.