Mild Encephalitis/Encephalopathy with reversible splenial lesion syndrome: an unusual presentation of anti-GFAP astrocytopathy
2020
: Autoimmune glial fibrillary acidic protein (GFAP) astrocytopathy is a rare recently defined antibody-mediated encephalitis. Meningo-encephalomyelitis presentation is frequent with lymphocytic pleiocytosis in the cerebro-spinal fluid and brain MRI classically demonstrates in 50% of cases, a linear perivascular enhancement extending radially from the ventricles. Here, we describe 2 cases of pediatric autoimmune GFAP astrocytopathy with limbic encephalitis presentation and peculiar MRI characteristics: one with normal MRI and the second suggestive of Mild Encephalitis/Encephalopathy with reversible splenial lesion syndrome (MERS). These two cases illustrate that anti-GFAP antibodies should be sought in children presenting limbic encephalitis with a normal and/or MERS suggestive MRI, as treatment strategies may differ.
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