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[Epilepsy and arteriovenous malformations].

M Kawasaki1, O J Hernández-Fustes, S Machado

  • 1Servicio de Neurología, Hospital Universitário Cajuru da PUC, Curitiba, Paraná, Brasil.

Revista De Neurologia
|July 3, 1999
PubMed
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Arteriovenous malformations (AVMs) are linked to difficult-to-treat epilepsy. Surgical intervention for AVMs can improve seizure control in affected patients.

Area of Science:

  • Neurology
  • Neurosurgery
  • Vascular Malformations

Background:

  • Epilepsy is a neurological disorder characterized by recurrent seizures.
  • Arteriovenous malformations (AVMs) are abnormal tangles of blood vessels that can occur in the brain.
  • AVMs are a known, though uncommon, cause of secondary epilepsy.

Purpose of the Study:

  • To characterize patients with epilepsy associated with arteriovenous malformations.
  • To investigate the clinical presentation and diagnostic findings in this patient cohort.
  • To evaluate the outcomes of surgical treatment for epilepsy secondary to AVMs.

Main Methods:

  • Retrospective case series of 11 patients with AVMs and refractory epilepsy.
  • Data collection included patient demographics, seizure types, neuroimaging (CT, MRI), EEG, and arteriography.

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  • Surgical outcomes were analyzed for patients who underwent intervention.

    • Main Results:

    • The study included 11 patients (6 male, 5 female) aged 12-40 years (mean 27).
    • All patients presented with refractory epileptic seizures; imaging revealed various cerebral lesions.
    • Arteriovenous malformations were confirmed in all patients via arteriography; 3 patients died, and 8 underwent surgery for associated cavernous or hemangiomatous lesions.

    Conclusions:

    • Cortical and non-cortical arteriovenous malformations are associated with epileptic seizures.
    • Surgical treatment, when feasible, appears to favor seizure control in patients with AVM-related epilepsy.