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Neurosyphilis with mesiotemporal magnetic resonance imaging abnormalities.

Kiwa Hama1, Hiroshi Ishiguchi, Tomikimi Tuji

  • 1Department of Neurology, Wakayama Medical University, Wakayama. kiwasuga@wakayama-med.ac.jp

Internal Medicine (Tokyo, Japan)
|October 16, 2008
PubMed
Summary

Neurosyphilis can mimic paraneoplastic limbic encephalitis with mesial temporal MRI abnormalities. Early diagnosis and treatment of neurosyphilis are crucial for a good prognosis.

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Area of Science:

  • Neurology
  • Infectious Diseases
  • Radiology

Background:

  • Paraneoplastic limbic encephalitis is a rare autoimmune disorder affecting the limbic system.
  • Mesial temporal T2-weighted MRI hyperintensity is a common finding in limbic encephalitis.
  • Neurosyphilis is a complex infection with diverse neurological manifestations.

Observation:

  • A patient presented with mesial temporal T2-weighted MRI hyperintensity mimicking limbic encephalitis.
  • The patient exhibited pupillary abnormalities suggestive of neurosyphilis.
  • Diagnostic workup included serum Treponema pallidum hemagglutination assay (TPHA) and cerebrospinal fluid examination.

Findings:

  • The patient was diagnosed with neurosyphilis, confirmed by serological and cerebrospinal fluid tests.

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  • The MRI findings, initially suggestive of encephalitis, were attributed to neurosyphilis.
  • Neurosyphilis diagnosis can be challenging due to varied clinical and imaging presentations.

    • Implications:

    • Neurosyphilis should be considered in the differential diagnosis of mesial temporal MRI abnormalities.
    • Prompt diagnosis and treatment of neurosyphilis are essential for favorable patient outcomes.
    • This case highlights the importance of a comprehensive diagnostic approach in neurology.