Male, 60 years old, with multiple sclerosis. Numerous, likely more than 20, foci of T2 hyperintensity are seen within the subcortical and periventricular white matter of the bilateral cerebral hemispheres. The heaviest lesion burden is seen in the right periventricular region where some lesions demonstrate a radial orientation with respect to the ventricle.None of the above-mentioned lesions demonstrates any associated enhancement, and indeed, no pathologic enhancement is seen intracranially. There is no evidence of parenchymal edema or mass effect. No restricted diffusion is seen. No significant intracranial hemorrhage or any abnormal extra-axial fluid is suspected. The ventricular system is within normal limits in size and morphology.
Numerous white matter lesions are seen compatible with the stated history of demyelinating disease. None of these lesions shows evidence of enhancement on the present study.