Diffuse damage of the cortex and bilateral basal ganglia (caudate, globus pallidus and putamen), with sparing of the cerebellum, subcortical white matter, thalami and the brain stem.
T1: Diffuse low signal intensity lesions at T1-weighted image involving the cortex.
T2: Diffuse high signal intensity lesions at T2-weighted image at the cortex, caudate, globus pallidus and putamen. Note that the damage spares the thalami, cerebellum and hypothalamus.
Some contrast enhancement of affected areas.