title: Primary central nervous system lymphoma imitates multiple sclerosis.
abstract: Primary central nervous system lymphoma (PCNSL) can be confused with multiple sclerosis (MS) in patients who present with neurological dysfunction, a non-enhancing periventricular lesion, and CSF pleocytosis. Administration of corticosteroid causes clinical improvement and regression of PCNSL in some patients which may be interpreted as a steroid-induced remission from an exacerbation of MS. Sustained clinical dependence upon corticosteroid is unusual in MS, and should lead to consideration of PCNSL. Repeat CSF examination and gadolinium-enhanced MRI scan obtained off corticosteroid should differentiate between the two diagnostic possibilities.
authors: Department of Neurology, Memorial Sloan-Kettering Cancer Center, New York, NY.
authors: L M
authors: LM
authors: DeAngelis
mesh_terms: D001932:Brain Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D006801:Humans; D008223:Lymphoma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed