Abstract
Inflammatory diseases of the central nervous system (CNS) include multiple sclerosis (MS), neuromyelitis optica spectrum disorder (NMOSD), myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD), and acute disseminated encephalomyelitis. In addition, various rheumatoid autoimmune diseases, autoimmune encephalitis, and medications such as immune checkpoint inhibitors can cause inflammation in the CNS. Radiological findings are very useful for us in differentiating inflammatory diseases of the CNS. On MRI, the shape, location, length/size, and gadolinium enhancement pattern of the lesions as well as the recovery and atrophy of the lesions following the acute phase, serve as important biomarkers for differentiating the diseases. In this review, we will highlight the typical characteristics MRI of optic neuritis, brain lesions, and myelitis in MS, NMOSD, and MOGAD, and outline the features of other inflammatory diseases of CNS.
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