Brain MRI, T2-weighted images, of a 13-year-old with juvenile Alexander disease

(A) Sagittal: symmetric lesions in the medulla oblongata at the level of the vestibular nuclei and the corticospinal tract.
(B) Axial: symmetric intramedullary lesions extending from the craniocervical level down to the middle of the cervical spine.
(C) Axial: normal cerebral white matter and basal ganglia.