Brain MRI of acute disseminated encephalomyelitis (ADEM)

(A) Axial T2-weighted magnetic resonance imaging (MRI) showing multiple, bilateral, hyperintense lesions in the periventricular white matter.
(B) Axial T2-weighted MRI with extensive bihemispheric demyelinating lesions involving the white matter and basal ganglia, extending into the mesencephalon.