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Post-streptococcal chorea in an adult with bilateral striatal encephalitis

Koichi Hagiwara1, Kayo Tominaga, Yoko Okada

  • 1Department of Neurology, Matsuyama Red Cross Hospital, 1 Bunkyou-cho, Matsuyama, Ehime 790-8524, Japan. hagiwara-kyu@umin.ac.jp

Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia
|February 26, 2011
PubMed

Insights

Distinctive MRI findings reveal specific basal ganglia changes in Sydenham's chorea. These imaging features suggest an autoimmune response targeting the striatum and caudate heads in affected patients.

Area of Science:

  • Neurology
  • Radiology
  • Immunology

Background:

  • Sydenham's chorea is a neurological disorder characterized by involuntary movements.
  • Diagnosis often relies on clinical presentation and exclusion of other causes.
  • Neuroimaging plays a role in identifying structural changes, though specific patterns are still being elucidated.

Observation:

  • A case study of an adult female patient with suspected Sydenham's chorea.
  • Magnetic Resonance Imaging (MRI) was utilized for detailed brain assessment.
  • Specific sequences, T2-weighted MRI, were employed to visualize tissue characteristics.

Findings:

  • The MRI revealed bilaterally symmetric, homogenous hyperintensities within the entire striatum.
  • These hyperintensities were clearly demarcated, indicating precise anatomical involvement.
  • Swelling of the bilateral caudate heads was also a prominent feature, suggesting inflammation or edema.

Implications:

  • The observed MRI patterns provide unique insights into the pathophysiology of Sydenham's chorea.
  • Findings support the hypothesis of an autoimmune etiology targeting the basal ganglia.
  • These distinctive neuroimaging markers could aid in earlier and more accurate diagnosis.

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