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  • Title: Longitudinally extensive transverse myelitis in neuromyelitis optica: a prospective study of 13 Caucasian patients and literature review.
    Author: Bălaşa R, Maier S, Bajko Z, Motataianu A, Crişan A, Bălaşa A.
    Journal: Acta Neurol Belg; 2015 Dec; 115(4):635-42. PubMed ID: 25944511.
    Abstract:
    Neuromyelitis optica (NMO) is a homogenous disease that can be diagnosed by an association of clinical, neuroimaging and serological aspects. We analysed our 4 years NMO series with longitudinally extensive transverse myelitis (LETM) during the disease course. We included consecutive adult Caucasian patients who were diagnosed with definite NMO, or cases of NMO-IgG seropositive LETM considered as limited forms of NMO. Patients included were negative for other diseases (autoimmune, infectious, etc.). We report the Expanded Disability Status Scale (EDSS), brain and spine MRI, CSF, NMO-IgG, treatment, motor and visual outcome. Thirteen cases fulfilled the inclusion criteria, and the mean follow-up period was 3.74 ± 1.8 years. The initial motor deficit was severe with the mean value of motor functional parameter of 4.46 ± 1 and improved at discharge to 2.53 ± 1.4 (p < 0.001). With treatment, the outcome after LETM attack was good in 10 patients, with a significant improvement of the EDSS mainly upon motor deficit, while visual function had a very slight amelioration. The CSF analysis was normal in 8 cases; spinal MRI showed evidence of LETM in all patients while brain MRI was normal in 7. NMO-IgG is a biomarker for NMO that is of diagnostic value in cases of isolated LETM. LETM has a better outcome than ON in NMO Caucasians. Spinal MRI is essential for NMO diagnosis in the presence of LETM and the absence of multiple brain MRI lesions. Maintenance immunosuppressive therapy reduces the frequency of attacks.
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