title: Correspondence.
authors: C M
authors: CM
authors: Poser
mesh_terms: D001932:Brain Neoplasms / Q000175:diagnosis; D003937:Diagnosis, Differential; D004679:Encephalomyelitis / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D009103:Multiple Sclerosis / Q000150:complications / Q000175:diagnosis*; D010300:Parkinson Disease / Q000150:complications*