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Related Experiment Videos

Brain MRI in late-onset multiple sclerosis.

J de Seze1, S Delalande, E Michelin

  • 1Department of Neurology, Hôpital R. Salengro, CHRU Lille, Lille Cedex, France. j-deseze@chru-lille.fr <j-deseze@chru-lille.fr>

European Journal of Neurology
|April 5, 2005
PubMed
Summary
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Late-onset multiple sclerosis (MS) is rare and often misdiagnosed. Standard MRI criteria show lower specificity in older adults, suggesting additional spinal cord MRI and CSF analysis for accurate diagnosis.

Area of Science:

  • Neurology
  • Radiology
  • Neuroimaging

Background:

  • Multiple sclerosis (MS) onset after age 50 is uncommon (1-6%) and prone to misdiagnosis.
  • Brain MRI abnormalities are prevalent in individuals over 50, complicating MS diagnosis.
  • Evaluating radiological criteria for late-onset MS is crucial due to diagnostic challenges.

Purpose of the Study:

  • To describe brain MRI findings in late-onset MS.
  • To assess the sensitivity and specificity of established MS radiological criteria in patients over 50.
  • To identify potential improvements for diagnosing MS in older adults.

Main Methods:

  • Retrospective analysis of brain MRI scans from 20 patients with MS onset after age 50.
  • Comparison with 26 age- and sex-matched controls with vascular risk factors.

Related Experiment Videos

  • Blind MRI review by two neuroradiologists using Paty, Fazekas, and Barkhof criteria.

    • Main Results:

    • Sensitivity for MS criteria ranged from 80% (Fazekas) to 90% (Paty).
    • Specificity varied: Paty (54%), Barkhof (65%), and Fazekas (69%).
    • Barkhof criteria demonstrated reduced specificity in older patients compared to younger cohorts.

    Conclusions:

    • Established MRI criteria for MS have limitations in specificity for patients over 50.
    • Consideration of spinal cord MRI and cerebrospinal fluid analysis is recommended.
    • These additional investigations may enhance diagnostic accuracy for suspected late-onset MS.