Figure 5.

A 30-year-old male patient presented with recent episodes of tonic clonic seizures associated with post-ictal confusion. He had no fever, respiratory symptoms, or neck stiffness. He tested COVID positive by PCR. MRI brain, (a) axial FLAIR T₂WI and (b) axial SWI shows right temporal intra-axial cortical and subcortical area of low signal on FLAIR T₂WI with surrounding parenchymal bright signal edema, and blooming hypointensity in SWI images (arrow in a and b respectively). There was no diffusion restriction (not shown). (c) Source image of post-contrast MR venography shows filling defect in the torcula and left transverse sinus extending to the sigmoid sinus (long arrows in c), with abrupt cut-off of right superior anastomotic vein (short arrow in c). FLAIR, fluid attenuatedinversion recovery; PCR, polymerase chain reaction; SWI, susceptibility-weightedimaging.