Mar 15, 2013

Distinction of seropositive NMO spectrum disorder and MS brain lesion distribution

Neurology
Lucy MatthewsJacqueline Palace

Abstract

Neuromyelitis optica and its spectrum disorder (NMOSD) can present similarly to relapsing-remitting multiple sclerosis (RRMS). Using a quantitative lesion mapping approach, this research aimed to identify differences in MRI brain lesion distribution between aquaporin-4 antibody-positive NMOSD and RRMS, and to test their diagnostic potential. Clinical brain MRI sequences for 44 patients with aquaporin-4 antibody-positive NMOSD and 50 patients with RRMS were examined for the distribution and morphology of brain lesions. T2 lesion maps were created for each subject allowing the quantitative comparison of the 2 conditions with lesion probability and voxel-wise analysis. Sixty-three percent of patients with NMOSD had brain lesions and of these 27% were diagnostic of multiple sclerosis. Patients with RRMS were significantly more likely to have lesions adjacent to the body of the lateral ventricle than patients with NMOSD. Direct comparison of the probability distributions and the morphologic attributes of the lesions in each group identified criteria of "at least 1 lesion adjacent to the body of the lateral ventricle and in the inferior temporal lobe; or the presence of a subcortical U-fiber lesion; or a Dawson's finger-type lesion,"...Continue Reading

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Mentioned in this Paper

Prevalence Studies
Autoantibodies
Bulla
Science of Morphology
Malignant Neoplasm of Temporal Lobe
Brain
Incidence Studies
Entire Temporal Lobe
Structure of Body of Lateral Ventricle
Subcortical

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