Brain Abnormalities in Neuromyelitis Optica Spectrum Disorder

Figure 1

MRI findings at acute manifestation and after symptoms resolved. Fluid-attenuated inversion recovery (FLAIR) abnormalities in a patient with encephalopathy (A-a) and T2 signal abnormalities in a patient with brainstem sign (B-a) almost resolved over a few months (A-b, B-b). However, the lesions involving the corticospinal tracts, especially the posterior limb of the internal capsule (C-a, D-a) showed cavitary changes on followup MRIs (C-b, D-b) [9].