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Rasmussen's encephalitis in surgery for epilepsy.

M Honavar1, I Janota, C E Polkey

  • 1Maudsley Hospital, Institute of Psychiatry, Denmark Hill, London.

Developmental Medicine and Child Neurology
|January 1, 1992
PubMed
Summary
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Rasmussen's encephalitis surgery, particularly hemispherectomy, offers significant benefits for patients. Neuropathological study is crucial for diagnosis and guiding treatment decisions in this rare neurological condition.

Area of Science:

  • Neurology
  • Neuroimmunology
  • Pediatric Neurology

Background:

  • Rasmussen's encephalitis is a rare, chronic inflammatory neurological disease affecting one cerebral hemisphere.
  • The etiology of Rasmussen's encephalitis remains largely unknown, complicating diagnosis and treatment.
  • This study investigates the clinical course and surgical outcomes in a cohort of patients with Rasmussen's encephalitis.

Observation:

  • Nineteen patients diagnosed with Rasmussen's encephalitis were evaluated using light microscopy, immunohistochemistry, and electron microscopy.
  • Inflammation was observed in all cases, but no specific causative agent was identified.
  • Patients presented with varying degrees of neurological deficits attributable to the unilateral brain inflammation.

Findings:

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  • Hemispherectomy was performed on 10 patients, resulting in significant improvement in 9 cases.
  • Local resection provided little to no benefit for 7 patients.
  • Subpial transection was beneficial for 2 patients, but one required subsequent hemispherectomy due to poor response.

    • Implications:

    • Surgical intervention, especially hemispherectomy, is a justified and effective treatment for managing debilitating symptoms of Rasmussen's encephalitis.
    • Neuropathological examination of resected brain tissue is essential for accurate diagnosis and determining the optimal management strategy.
    • Further research into the underlying mechanisms of Rasmussen's encephalitis is needed to develop targeted therapies.