Fig. 1.

Obstetrical ultrasound images from the 19 weeks' gestation anatomy scan (A, B) and post-natal renal ultrasound images obtained at day two of life (C, D). Sagittal facial profile view (A) shows prefrontal edema (arrowheads), a long philtrum (large arrow), and micrognathia (small arrows). An axial view through fetal kidneys (B) shows a markedly enlarged right kidney (arrows) in which the renal parenchyma is nearly completely replaced with simple cysts of variable sizes. The axial view also shows a morphologically normal but slightly echogenic left kidney (arrowheads). Post-natal sagittal ultrasound image of the right kidney (C) again shows a multicystic dysplastic kidney (cursors). Post-natal sagittal ultrasound image of the left kidney (D) shows morphologically normal left kidney (cursors) with a small simple cyst (arrow).