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Increased signal in cerebral white matter (MRI)

Proton density axial MRIs of the head show 2 areas of increased signal (arrows) in the cerebral white matter of a 45-year-old patient with a spastic, wide-based gait, urinary symptoms, and CSF positive for HTLV-1. (Used with permission from: Howard A, Li D, Oger J. MRI contributes to the differentiation between multiple sclerosis and HTLV-1 associated myelopathy in British Columbian coastal natives. Can J Neurol Sci 2003;30:41-8.)

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