MRI demonstrates diffuse right cerebral hemiatrophy with ex-vacuo dilatation of the right lateral ventricle, right Sylvian fissure as well as cortical sulci. Reduction in volume of the ipsilateral cerebral peduncle due to Wallerian degeneration. Associated calvarial thickening with increased pneumatization of both frontal sinus and mastoid cells are also noted.
Associated crossed left cerebellar hemiatrophy with small cerebellum and prominent folia.