Occipital lobe epilepsy in children: Characterization, evaluation and surgical outcomes

George M. Ibrahim, Aria Fallah, Gregory W. Albert, Teresa Withers, Hiroshi Otsubo, Ayako Ochi, Tomoyuki Akiyama, Elizabeth J. Donner, Shelly Weiss, O. Carter Snead, James M. Drake, James T. Rutka

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Introduction: Occipital lobe epilepsy (OLE) poses a diagnostic challenge to clinicians. Here, we present our experience in the surgical management of OLE in children using magnetoencephalography (MEG) in the pre-operative evaluation. Methods: Retrospective chart review was performed from 2000 to 2010 to identify patients with OLE. Patients were analyzed in two categories: isolated OLE (11 patients) and extended OLE (parietooccipital, temporooccipital, and temporoparietooccipital; 30 patients). Survival analysis and multivariate Cox proportional hazards regression were used to identify independent predictors of seizure outcome. Results: Forty-one patients with a mean follow-up of 3.1 years were identified with an overall 68% rate of satisfactory seizure outcome. Patients with extended OLE had younger ages at seizure onset and different seizure semiologies compared with those with isolated OLE. None of the latter underwent insertion of subdural grid electrodes for localization of the epileptogenic zone compared with 77% of the former (p< 0.001). On multivariate analysis, the strongest independent predictor of unsatisfactory outcome was MEG dipoles in the occipital lobe contralateral to resection. Conclusion: Here, we find similar seizure outcomes for isolated and extended OLE foci despite the use of less invasive strategies for the former. Furthermore, we describe the role of MEG in evaluation, surgical planning and prognostication of children with OLE.

Original languageEnglish
Pages (from-to)335-345
Number of pages11
JournalEpilepsy Research
Volume99
Issue number3
DOIs
Publication statusPublished - May 1 2012
Externally publishedYes

Keywords

  • Children
  • Intractable epilepsy
  • Occipital lobe epilepsy
  • Surgical resection

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology

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  • Cite this

    Ibrahim, G. M., Fallah, A., Albert, G. W., Withers, T., Otsubo, H., Ochi, A., Akiyama, T., Donner, E. J., Weiss, S., Snead, O. C., Drake, J. M., & Rutka, J. T. (2012). Occipital lobe epilepsy in children: Characterization, evaluation and surgical outcomes. Epilepsy Research, 99(3), 335-345. https://doi.org/10.1016/j.eplepsyres.2011.12.015