A 62 year old woman, known to have retroviral disease, came with urinary retention and lower limb weakness since one month. The CD4 count was less than 100 cells per cubic millimeter
Contrast enhanced MRI of the brain shows asymmetrical T2/FLAIR hyperintensities in the subcortical white matter of the left parietooccipital region including the subcortical U-fibres . There is no significant atrophy. There is no diffusion restriction or post-contrast enhancement.