1. [On the best strategies on the best results for surgery of frontal epilepsy]
- Author
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S, Trottier, E, Landré, A, Biraben, F, Chassoux, A, Pasnicu, J-M, Scarabin, B, Turak, and B, Devaux
- Subjects
Adult ,Male ,Adolescent ,Epilepsy, Frontal Lobe ,Patient Selection ,Motor Cortex ,Infant ,Electroencephalography ,Middle Aged ,Functional Laterality ,Neurosurgical Procedures ,Cohort Studies ,Electrophysiology ,Postoperative Complications ,Treatment Outcome ,Seizures ,Child, Preschool ,Humans ,Female ,Longitudinal Studies ,Child ,Dominance, Cerebral ,Follow-Up Studies - Abstract
Frontal lobe epilepsy surgery is the second most common surgery performed for drug-resistant partial epilepsy. We investigated the longitudinal outcome in a cohort of patients investigated since 1990 with SEEG and modern diagnostic techniques. We reviewed 105 patients who underwent surgery between 1990 and 2005 (mean follow-up, six years; range: one to 17 years) and analyzed the year-per-year follow-up according to Engel's classification. Favorable outcome (Class I) was observed for 70% and this result was stable at least five years after surgery. More than 90% of patients with lesion-related epilepsies (focal cortical dysplasia and dysembryoplastic neuroepithelial tumors) became seizure-free. Less than 50% of patients classified as having cryptogenic epilepsy (defined as normal imaging and neuropathology on surgical specimen) had a favorable outcome. Permanent neurological sequelae were subtle and rare, especially after surgery for dysplasia in eloquent cortex (primary motor cortex). Our data indicate that frontal surgery is a successful treatment in patients when electrophysiological and morphological investigations demonstrate a well-defined epileptogenic zone or lesion to be surgically resected. Progress in electrophysiological and brain-imaging techniques will further improve the selection of frontal lobe epilepsy surgery candidates.
- Published
- 2008