Edematous gyri seen in the involved region with T2 and T2 FLAIR hyperintense signals confined tothe subcortical and deep white matter suggestive of vasogenic edema. Post contrast study reveals a gyriform pattern of enhancement. Isointense to subtle hyperintense signal is seen in diffusion weighted images with isointense signals in ADC map.
The angiogram of the circle of Willis was unremarkable apart from focal vasodilation in the afflicted site likely secondary to reperfusion changes.
In a known patient of Takayasu arteritis and the nature of acute onset symptoms with no other ancillary clinical features like fever, possibility of a subacute infarction was considered.