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Figure 1. Progressive Multifocal Leukoencephalopathy.
Magnetic resonance images of the brain were obtained in a 40-year-old man with the acquired immunodeficiency syndrome who had a six-week history of decreased memory and visual impairment. The changes associated with progressive multifocal leukoencephalopathy are best seen on the T2-weighted image (Panel A) as high-intensity abnormalities isolated in the white matter (arrows). A large, bilateral parieto-occipital lesion crosses the splenium of the corpus callosum (open arrows); a smaller frontal-lobe lesion is also present (solid arrow). On the T1-weighted image (Panel B), the lesions appear as low-intensity abnormalities that are not enhanced with . . . [Full Text of this Article] |
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