Diffuse leptomeningeal thickening and enhancement is seen with small bilateral frontal subdural marginally-enhancing collections. Mild supra-tentorial hydrocephalic changes are seen. Multiple bilateral patchy areas of altered signal intensity are seen within bilateral frontal lobes, bilateral basal ganglia and deep parietal lobes, as well as bilateral occipital, temporal, high fronto-parietal (centrum semiovale) and the splenium of the corpus callosum. Lesions show low T1 and high T2 / FLAIR signal intensity with evident restricted diffusion.
No sellar or juxta-sellar mass lesions. Normal cerebellum, brain stem and cervicomedullary junction.