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[Asymptomatic multiple sclerosis - 3 cases (author's transl)]

P Castaigne, F Lhermitte, R Escourolle

    Revue Neurologique
    |January 1, 1981
    PubMed
    Summary
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    Asymptomatic Multiple Sclerosis (MS) cases, identified incidentally at autopsy, show unique neuropathological features. These rare cases highlight specific lesion locations and axonal preservation contributing to their lack of clinical symptoms.

    Area of Science:

    • Neuropathology
    • Neuroimmunology
    • Clinical Neurology

    Background:

    • Asymptomatic Multiple Sclerosis (MS) is defined by MS lesions found incidentally at autopsy without prior clinical manifestation.
    • Understanding the pathological basis of asymptomatic MS is crucial for a comprehensive understanding of disease spectrum.

    Observation:

    • Three autopsy cases of asymptomatic MS are presented, selected from 125 MS cases and 9,300 general neuropathological records.
    • Patients presented with unrelated comorbidities and pathologies, including meningioma, infarcts, and valvular heart disease.
    • Neuropathological examination revealed disseminated old MS plaques primarily in the brain parenchyma, with normal optic tracts and spinal cord in two cases.

    Findings:

    • Asymptomatic presentation in these cases correlated with plaque location (cerebral hemispheres, brain stem) and absence of spinal cord or optic tract involvement.

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  • Plaque characteristics, including small size and axonal preservation, may also contribute to the lack of clinical symptoms.
  • These features are rare, with only 3 cases identified out of a large neuropathological cohort.

    • Implications:

    • The findings suggest that the topographical distribution and pathological characteristics of MS lesions significantly influence clinical presentation.
    • These rare cases expand the understanding of MS heterogeneity and the potential for subclinical disease.
    • Further research into lesion characteristics may reveal novel insights into MS pathogenesis and clinical prediction.