Coronal T2-weighted single-shot fast spin-echo of the fetal brain at 20 weeks and 6 days.Coronal T2-weighted single-shot fast spin-echo of the fetal brain at 20 weeks 6 days demonstrates enlargement of the lateral ventricles (black arrow), filled with prominent choroid plexus. Note also made of enlarged bilateral extra-axial spaces (white arrow). Parenchymal thinning was present, likely secondary to ventriculomegaly.