A 13 year old girl was brought with swelling in the left thigh region. There was history of twisting injury to the left leg four months back
On T1/T2 sequences, MRI of the brain shows prominent flow voids in the basal ganglia, lenticulostriate and periventricular white matter flow voids. The time of flight angiography shows severely attenuated internal carotid arteries with multiple collaterals at the base of the brain.