Abstract
AbstractBackgroundNeuro‐Behçet's disease (NBD) is typically characterized by inflammatory lesions with vasculitis in the brainstem and basal ganglia. Subcortical white matter lesions and linear lesions along the intramedullary trigeminal nerve are rare, and these lesions make NBD difficult to differentiate from other demyelinating diseases, such as multiple sclerosis.Case presentationA 48‐year‐old woman with an 11‐year history of intestinal Behçet's disease was referred to Department of Neurology, Tohoku Medical and Pharmaceutical University Hospital, Sendai, Japan owing to numbness on the left side of her face and oral cavity for 12 days. Neurological examination revealed left facial hypoesthesia. Brain magnetic resonance imaging showed a linearly shaped T2/fluid‐attenuated inversion recovery hyperintense magnetic resonance imaging lesion in the left pons, which corresponded neuroanatomically with the intramedullary trigeminal root. Based on the presumptive diagnosis of NBD, a course of high‐dose intravenous methylprednisolone was administered on the 14th hospital day. Thereafter, the patient's neurological symptoms improved. However, on the 18th hospital day, the patient developed a linear subcortical white matter lesion with vasogenic edema in the right hemisphere that resolved after the re‐administration of high‐dose intravenous methylprednisolone.ConclusionThe case of a patient with NBD presenting with atypical brain lesions is reported. The NBD in this case might have a pathogenetic mechanism that is different from that of typical NBD.
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