title: Multiple sclerosis presenting as a single mass lesion.
abstract: A 6-year-old male presented with a subacute onset of hemiplegia and a mass lesion on computed tomography scan. Pathology from a surgical biopsy revealed demyelination only. Ten months later, he had a recurrence on the opposite side. A magnetic resonance imaging scan revealed a corresponding mass lesion in the other cerebral hemisphere, allowing the diagnosis of multiple sclerosis. Consideration should be given to diagnoses other than a tumor when the clinical picture and radiologic features are atypical.
authors.affiliation: Division of Child Neurology, State University of New York Health Sciences Center, Brooklyn 11203, USA.
authors.forename: E
authors.initials: E
authors.lastname: Brunot
authors.forename: J C
authors.initials: JC
authors.lastname: Marcus
mesh_terms: D002540:Cerebral Cortex / Q000473:pathology* / Q000601:surgery; D002648:Child; D003937:Diagnosis, Differential; D018450:Disease Progression; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009103:Multiple Sclerosis / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome