Fig. 2

Brain magnetic resonance imaging (MRI) of patient #21. a Axial T2-weighted image showing mild hyperintensity in the periventricular deep white matter (thin arrow). b Axial fluid attenuated inversion recovery (FLAIR) scan demonstrating hyperintensity in the periventricular white matter, especially in the posterior regions (thin arrow), with preserved myelination in the subcortical white matter (thick arrow). c Coronal T2-weighted scan demonstrating mild hyperintensity in the posterior periventricular white matter (thin arrow) and moderate cerebellar atrophy (thick arrow). d Sagittal T1-weighted scan showing moderate cerebellar atrophy (thick arrow) with enlarged IV ventricle (star) and cisterna magna (thin arrow). The time from the first seizure to MRI was one month