Atypical inflammatory demyelinating lesions and atypical multiple sclerosis |
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Authors: | X. Ayrignac C. Carra-Dallière P. Labauge |
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Affiliation: | Department of Neurology, Montpellier University Hospital, 80 rue Augustin Fliche, 34295 Montpellier, Cedex 05, France |
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Abstract: | Atypical idiopathic inflammatory demyelinating disorders (IIDDs) of the brain have long been known to be disorders closely related to multiple sclerosis (MS), despite having distinctive clinical and radiological characteristics. Originally, they mostly corresponded to acute-onset variants of MS that classically had poor prognoses, such as Baló’s concentric sclerosis, Marburg variant of MS and Schilder's disease, and their relationship with MS was based on their shared pathological findings and the co-occurrence of these variants in patients with typical MS. More recently, other atypical disorders, such as solitary sclerosis, have also been described as belonging to the MS spectrum, raising the question of their links with MS. Meanwhile, multiple MS mimics have been described and need to be considered in the differential diagnosis of MS. In addition, thorough characterization of these atypical entities, including advanced MRI and biological studies, is now warranted to further improve their management. |
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Keywords: | Atypical demyelinating lesions Balo's concentric sclerosis Tumefactive demyelination Acute hemorrhagic leukoencephalitis Solitary sclerosis |
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