Fig. 7.

Acute disseminated encephalomyelitis (ADEM). A 2-year-old boy with recent upper respiratory tract infection and low-grade fevers presents with lower extremity weakness and difficulty walking. a and b Sagittal T2 images of the cervical and thoracic spine demonstrate long-segment areas of hyperintensity involving the cervical and thoracic spinal cord (arrows). There is mild associated cord swelling. c Axial T2 FLAIR image shows mass-like hyperintensity within the thalami (arrow). d Follow-up sagittal T2 image of the thoracic spine demonstrates resolution of the previously seen lesions—normal cord