FIG 4. Case 4. Sagittal non-contrast T1- (A) (400/10/1) and coronal T2-weighted (B) (2500/105/1) images show abnormal signal within the body of the corpus callosum and adjacent white matter (arrow) on the left side. Sagittal (C) (400/8/2) and coronal (D) (450/20/1) postcontrast T1-weighted images from a subsequent MR examination show abnormal enhancement (arrow) within the corpus callosum and adjacent white matter