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Related Experiment Videos

Transverse myelitis--neurophysiological and MRI correlation

U K Misra1, J Kalita

  • 1Department of Neurology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India.

Paraplegia
|September 1, 1994
PubMed
Summary

Acute transverse myelitis (ATM) rarely affects the cervical spinal cord. This study highlights two cases where MRI and evoked potentials correlated with clinical deficits, suggesting MEP better reflects cervical cord changes.

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Area of Science:

  • Neurology
  • Neuroscience
  • Spinal Cord Medicine

Background:

  • Acute transverse myelitis (ATM) is a rare neurological condition.
  • Cervical spinal cord involvement in ATM is exceptionally uncommon.

Observation:

  • This report details two patients diagnosed with ATM affecting the cervical spinal cord.
  • Magnetic resonance imaging (MRI) showed extensive T2 high-intensity signals, surpassing the sensory level.
  • Evoked potential studies revealed significant abnormalities.

Findings:

  • Motor evoked potentials (MEP) were largely unrecordable, with one limb showing marginal prolongation.
  • Tibial somatosensory evoked potentials (SEP) were unrecordable, while median SEP remained normal.
  • Both MEP and SEP correlated with clinical deficits, with MEP showing a stronger correlation to MRI findings.

Implications:

  • These findings underscore the utility of evoked potentials in assessing cervical spinal cord lesions in ATM.
  • MEP may serve as a more sensitive indicator of the extent of cervical cord damage in ATM compared to SEP.
  • Further research is warranted to elucidate the prognostic value of MEP and SEP in ATM.

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