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[Magnetic-resonance tomography in differential diagnosis of brain lesions in demyelinating and systemic autoimmune diseases].

An aim of the study was to establish MRT signs that may be useful for differential diagnosis of multiple sclerosis (MS). Three groups of patients have been examined: 300 patients with MS, 35 with demyelinating diseases (acute disseminated encephalomyelitis, neuromyelitis optica--Devic's syndrome); 90 patients with systemic autoimmune diseases (systemic lupus erythematosus, primary antiphospholipid syndrome, sclerodermatitis, Sjugren's syndrome, autoimmune thyroiditis, vasculitis and vasculopathy). Classification of MRT syndromes in MS and their frequency are presented: syndrome of chronic inflammatory demyelination (79%), syndrome of acute inflammatory demyelination (9%), syndrome of multifocal degenerative leucoencephalopathy (8%), syndrome of combined multifocal diffusive leucoencephalopathy (4%). The similarity and differences in MRT semiotics of the above diseases and MS are described.