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Seizure outcome after extratemporal epilepsy surgery in childhood

Luigi D'Argenzio1, M Chiara Colonnelli, Sue Harrison

  • 1Neurosciences Unit, University College London Institute of Child Health and Great Ormond Street Hospital NHS Trust, London, UK. l.d'argenzio@ucl.ac.uk

Developmental Medicine and Child Neurology
|July 24, 2012
PubMed

Insights

Surgery for drug-resistant focal extratemporal epilepsy offers excellent long-term seizure freedom in 50% of children. The underlying cause of the epilepsy is the key factor predicting successful surgical outcomes.

Area of Science:

  • Pediatric Neurology
  • Neurosurgery
  • Epileptology

Background:

  • Drug-resistant focal extratemporal epilepsy presents significant challenges in pediatric populations.
  • Surgical intervention is considered for refractory cases when conservative treatments fail.

Purpose of the Study:

  • To evaluate seizure outcomes after surgical treatment for focal extratemporal epilepsy in children.
  • To identify predictors of sustained seizure freedom post-surgery.

Main Methods:

  • Retrospective cohort study of children with drug-resistant focal extratemporal epilepsy.
  • Surgical treatment and follow-up conducted at a single tertiary care center (1997-2008).
  • Analysis of presurgical factors and long-term seizure recurrence.

Main Results:

  • Fifty percent of children achieved complete seizure freedom (Engel class Ia) post-surgery.
  • Aetiology of the epileptogenic lesion was the sole significant determinant of long-term seizure outcome.
  • Non-specific lesion pathology was strongly associated with seizure recurrence (HR 10.43).

Conclusions:

  • Surgical treatment provides excellent long-term seizure control for half of pediatric patients with drug-resistant extratemporal epilepsy.
  • Epileptogenic lesion aetiology is the critical factor influencing surgical success.
  • Accurate identification of non-specific pathology on presurgical MRI remains challenging.
Abstract

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