Opinion statement
Surgery for refractory epilepsy in appropriately selected children is effective. The key factors influencing a good outcome are careful selection of candidates, early referral to pediatric epilepsy surgical unit, underlying neuropathology and the completeness of surgical resection of the seizure focus. Although the primary aim of a surgery is seizure freedom, benefits are also seen in cognitive development. Early prompt referral is therefore desired to optimise outcome. Focal resections involving the temporal and frontal lobes are the common resective procedures in children, with cortical malformations the most common underlying pathology. Hemispherectomy or multilobar procedures are more commonly performed in children younger than four years. Seizure free rates reach 60–80 %. The availability of newer techniques for presurgical evaluation, along with invasive intracranial electroencephalographic (EEG) recording, has facilitated surgical consideration. Resective surgery may also be beneficial for children who may appear to have bilateral or generalised clinical or EEG features associated with focal lesions on MRI. Vagal Nerve Stimulation (VNS) and corpus callosotomy are employed for selected candidates not suitable for resective surgery with good results.
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Kwan P, Arzimanoglou A, Berg AT, et al. Definition of drug resistant epilepsy: Consensus proposal by the ad hoc Task Force of the ILAE Commission on Therapeutic Strategies. Epilepsia. 2010;51(6):1069–77.
Cross JH, Jayakar P, Nordli D, et al. Proposed criteria for referral and evaluation of children for epilepsy surgery: recommendations of the Subcommission for Pediatric Epilepsy Surgery. Epilepsia. 2006;47(6):952–9.
Cross JH. Epilepsy surgery in childhood. Epilepsia. 2002;43 Suppl 3:65–70.
Skirrow C, Cross JH, Cormack F, et al. Long-term intellectual outcome after temporal lobe surgery in childhood. Neurology. 2011;76:1330.
Colonnelli MC, Cross JH, Davies S, et al. Psychopathology in children before and after surgery for extra-temporal lobe epilepsy. Dev Med Child Neurol. 2012;54:521–6.
McLellan A, Davies S, Heyman I, et al. Psychopathology in children before and after temporal lobe resection. Dev Med Child Neurol. 2005;47(10):666–72.
Harvey AS, Cross JH, Shinnar S, the Paediatric Epilepsy Surgery Survey Taskforce, et al. Defining the spectrum of international practice in paediatric epilepsy surgery patients. Epilepsia. 2008;49:146–55.
Engel J, Cascino GD, Shields WD. Surgical remediable syndrome. In: Engel J, Pedley TA, Aicardi J, editors. Epilepsy: A Comprehensive Textbook. Philadelphia: Lippincott– Raven; 1998. p. 1687–96.
Ricci S, Cusmai R, Fariello G, Fusco L, Vigevano F. Double cortex: a neuronal migration anomaly as a possible cause of Lennox–Gastaut syndrome. Arch Neurol. 1992;49(1):61–4.
Asarnow RF, Lopresti C, Guthrie D, et al. Developmental outcomes in children receiving resection surgery for medically intractable infantile spasms. Dev Med Child Neurol. 1997;39(7):430–40.
Hur YJ, Lee JS, Kim DS, et al. Electroencephalography features of primary epileptogenic regions in surgically treated MRI-negative infantile spasms. Pediatr Neurosurg. 2010;46(3):182–7.
Wyllie E, Lachhwani DK, Gupta A, et al. Successful surgery for epilepsy due to early brain lesions despite generalized EEG findings. Neurology. 2007;69(4):389–97.
Lui SY, Ning A, Xiang F, et al. Surgical treatment of patients with Lennox–Gastaut Syndrome Phenotype. Sci World J. 2012, Article ID 614263.
Peltola ME, Liukkonen E, Granstrom ML, et al. The effect of surgery in encephalopathy with electrical status epilepticus during sleep. Epilepsia. 2011;52(3):602–9.
Devlin AM, Cross JH, Harkness W, et al. Clinical outcomes of hemispherectomy for epilepsy in childhood and adolescence. Brain. 2003;126:556–6.
Kaufman WE, Krauss GL, Uematsu S, Lesser RP. Treatment of epilepsy with multiple subpial transections: an acute histologic analysis in human subjects. Epilepsia. 1996;37:342–52.
Blount JP, Langburt W, Otsubo H, et al. Multiple subpial transections in the treatment of pediatric epilepsy. J Neurosurg. 2004;100(2 Suppl) Pediatrics:118–24.
Yang T, Chen J, Yan B, et al. Transcranial ultrasound stimulation: A possible therapeutic approach to epilepsy. Elsevier: Med Hypotheses. 2011;76:381–3.
Hoggard N, Wilkinson ID, Griffiths PD, et al. The clinical course after stereotactic radiosurgical amygdalohippocampectomy with neuroradiological correlates. Neurosurgery. 2008;62:336–44.
Prayson RA, Yoder BJ. Clinicopathologic findings in mesial temporal sclerosis treated with gamma knife radiotherapy. Ann Diagn Pathol. 2007;11:22–6.
Regis J, Rey M, Bartolomei F, et al. Gamma knife surgery in mesial temporal lobe epilepsy: a prospective multicenter study. Epilepsia. 2004;45:504–15.
Barbaro NM, Quigg M, Broshek DK. A multicenter, prospective pilot study of gamma knife radiosurgery for mesial temporal lobe epilepsy: seizure response, adverse events, and verbal memory. Ann Neurol. 2009;65:167–75.
Krsek P, Maton B, Jayakar P, et al. Incomplete resection of focal cortical dysplasia is the main predictor of poor post-surgical outcome. Neurology. 2009;72:217–23.
Paolicchi JM, Jayakar P, Dean P, et al. Predictors of outcome in pediatric epilepsy surgery. Neurology. 2000;54:642–7.
Schramm J, Kral T, Grunwald T, et al. Surgical treatment for neocortical temporal lobe epilepsy: clinical and surgical aspects and seizure outcome. J Neurosurg. 2001;94:33–42.
Clusmann H, Schramm J, Kral T, et al. Prognostic factors and outcome after different types of resection for temporal lobe epilepsy. J Neurosurg. 2002;97:1131–41.
Wray CD, McDaniel SS, Saneto RP, et al. Is postresective intraoperative electrocorticography predictive of seizure outcomes in children? J Pediatr Neurosurg. 2012;5:546–51.
Pilcher WH, Rusyniak WG. Complications of epilepsy surgery. Neurosurg Clin. 1993;4:311–25.
Benifla M, Otsubo H, Ochi A, et al. Temporal lobe surgery for intractable epilepsy in children: an analysis of outcomes in 126 children. Neurosurgery. 2006;59(6):1203–13.
Fish DR, Smith SJ, Quesney LF, et al. Surgical treatment of children with medically intractable frontal or temporal lobe epilepsy: results and highlights of 40 years’ experience. Epilepsia. 1993;34(2):244–7.
D’Argenzio L, Colonelli MC, Harrison S, et al. Seizure outcome after extratemporal epilepsy surgery in childhood. Dev Med Child Neurol. 2012. doi:10.1111/j.1469-8749.2012.04381.x. epub.
Munari C, Tassi L, et al. Surgical treatment for frontal lobe epilepsy. In: Luders H, Comair Y, editors. Epilepsy Surgery. 2nd ed. Philadelphia: Lippincott Williams & Wilkins; 2001. p. 689–97.
Dorfmuller G, Bealteau C, Delalande O. Hemispherectomy for Epilepsy. The Treatment of Epilepsy, 3rd ed. In: Shorvon S, Perucca E, Engel J, editors. Blackwell Publishing Ltd.; 2009. ISBN: 978-1-405-18383-3.
Doring S, Cross H, Boyd S, et al. The significance of bilateral EEG abnormalities before and after hemispherectomy in children with unilateral major hemisphere lesions. Epilepsy Res. 1999;34:65–73.
Boshuisen K, van Schooneveld MM, Leijten FS, et al. Contralateral MRI abnormalities affect seizure and cognitive outcome after hemispherectomy. Neurology. 2010;75(18):1623–30.
Cook SW, Nguyen ST, Hu B, et al. Cerebral hemispherectomy in pediatric patients with epilepsy: comparison of the three techniques by pathological substrate in 115 patients. J Neurosurg (Pediatrics 2). 2004;100:125–41.
Delalande O, Bulteau C, Delatollas G, et al. Vertical parasagittal hemispherotomy: surgical procedures and clinical long-term outcomes in a population of 83 children. Neurosurg. 2007;60 Suppl 1:ONS19–32.
Kossoff EH, Vining EPG, Pillas DJ, et al. Hemispherectomy for intractable unihemispheric epilepsy. Etiology vs outcome. Neurology. 2003;61:887–90.
Spencer S, Spencer D, Sass K. Anterior, total, and two-stage corpus callosum section: differential and incremental seizure responses. Epilepsia. 1993;34:561–7.
Tanriverdi T, Olivier A, Poulin N, et al. Long term seizure outcome after corpus callosotomy: a retrospective analysis of 95 patients. J Neurosurg. 2009;110(2):332–42.
Morrell F, Whisler WW, Smith MC, et al. Landau Kleffner syndrome; treatment with subpial intracortical resection. Brain. 1995;118:1497–520.
Irwin K, Birch V, Lees J, Polkey C, Alarcon G, Binnie C, et al. Multiple subpial transaction in Landau–Kleffner syndrome. Dev Med Child Neurol. 2001;43:248–52.
Kotagal P. Neurostimulation: Vagus nerve stimulation and beyond. Semin Pediatr Neurol. 18:186–94 © 2011 Elsevier Inc. This article reviews the various methods of neurostimulation considered useful for treating refractory epilepsy. It includes the FDA approved vagal nerve stimulation, along with the yet unapproved newer modalities.
Coykendall DS, Gauderer MW, Blouin RR, et al. Vagus nerve stimulation for the management of seizures in children: an 8 year experience. J Pediatr Surg. 2010;45:1479–83.
Forbes R. Cost utility of vagus nerve stimulation (VNS) therapy for medically refractory epilepsy – an update. Seizure. 2008;17:387–8.
Ben-Menachem T, Hellstrom K, Verstappen D. Analysis of direct hospital costs before and 18 months after treatment with vagus nerve stimulation therapy in 43 patients. Neurology. 2002;59:S44–7.
Boon P, D’Have M, Van Walleghem P, et al. Direct medical costs of refractory epilepsy incurred by three different treatment modalities: a prospective assessment. Epilepsia. 2002;43:96–102.
Quigg M, Rolston J, Barbaro NM. Radiosurgery for epilepsy: Clinical experience and potential antiepileptic mechanisms. Epilepsia. 2012;53(1):7–15.
Disclosure
Dr. Cross holds an endowed chair through the University College, London. She has sat on advisory panels for Eisai and Viropharma, for which remuneration has been paid to her department. She has received money for her department from an educational grant from UCB and Eisai for a clinical training fellowship in epilepsy. She currently holds grants for research as co-investigator from Action Medical Research, Epilepsy Research UK, and the Great Ormond Street Hospital Children’s Charity. She worked as clinical advisor to the update of the NICE guidelines on the diagnosis and management of epilepsy (2009–2012), for which remuneration was made to her department.
Dr. Jadhav reported no potential conflicts of interest relevant to this article.
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Jadhav, T., Cross, J.H. Surgical Approaches to Treating Epilepsy in Children. Curr Treat Options Neurol 14, 620–629 (2012). https://doi.org/10.1007/s11940-012-0203-8
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DOI: https://doi.org/10.1007/s11940-012-0203-8