Figure 1.

Cranial MRI showing (a) axial, (b) sagittal, and (c) coronal T1-weighted contrast enhanced views with open-ring enhancement of a hypointense lesion in the parietooccipital region with splenium corpus callosum involvement. (d) Axial FLAIR-weighted image showing hyperintense lesion in the parietooccipital region with extensive splenium corpus callosum involvement. (e) Rim lesions: coronal T2-weighted images showing a hypointensity margin relative to the hyperintensity of the lesion center and periphery.