Myelitis: Differences between multiple sclerosis and other aetiologies

Area of Science:

• Neurology
• Immunology
• Radiology

Background:

• Myelitis can be an initial symptom of various conditions, including demyelinating, inflammatory, and infectious diseases.
• Distinguishing myelitis associated with multiple sclerosis (MS) from other causes is clinically significant.

Purpose of the Study:

• To analyze the differences between myelitis associated with multiple sclerosis (MS) and myelitis resulting from other etiologies.
• To identify clinical and radiological features that differentiate MS-related myelitis.

Main Methods:

• Retrospective analysis of 91 patients with initial myelitis from 2000-2013 at a single center.
• Comparison of demographic, etiological, clinical, radiological, and prognostic variables between MS and non-MS myelitis groups.

Main Results:

• MS-related myelitis occurred in younger patients, showed more sphincter and multifocal spinal MRI involvement, shorter lesions, and posterior/cervical locations.
• Other etiologies more frequently presented with anterior/central cord involvement and had better recovery at one year.
• Multivariate analysis identified multifocal and posterior spinal cord involvement as independently associated with MS diagnosis.

Conclusions:

• A significant proportion of initial myelitis cases are diagnosed as MS.
• Multifocal and posterior spinal cord lesions are key indicators associated with MS diagnosis in patients presenting with myelitis.