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Journal of the Korean Child Neurology Society 2007;15(1):35-44.
Published online May 30, 2007.
Neuropsychological Outcome after Epilepsy Surgery in Pediatric Patients.
Jee Hun Lee, Bo Lyun Lee, Ju Hee Chin, Dae Won Seo, Seung Bong Hong, Seung Chul Hong, Mun Hyang Lee
1Department of Pediatrics, Sungkyunkwan University School of Medicine, Seoul, Korea. mhlee@smc.samsung.co.kr
2Department of Neurology, Sungkyunkwan University School of Medicine, Seoul, Korea.
3Department of Neurosurgery, Sungkyunkwan University School of Medicine, Seoul, Korea.
Abstract
PURPOSE
With this study, we evaluated the operative and neuropsychological outcomes after epilepsy surgery in children. METHODS: We studied the surgical outcomes and the possibly related factors retrospectively by reviewing the medical records of 28 patients who underwent epilepsy surgery before the age of 15 years along with the battery of neuropsychological tests. RESULTS: The mean age of seizure onset was 84.8 months, and the mean period at the surgery after the onset of seizure was 62.4 months. Among 28 patients, 15 had complex partial seizures(CPS) only, 11 CPS with secondary generalization, and two simple partial seizures in addition to CPS. The types of the surgery included anterior temporal lobectomy with amygdalo-hippocampectomy(9 patients), extra-temporal or lateral temporal resection with temporal lobectomy(16 patients), and extra-temporal resection(3 patients). Evaluating their surgical outcomes, 21 patients belonged to Engel class I, five to class II, and each one to class III and IV respectively. There was no significant difference in full scale intelligence quotient(IQ) and verbal IQ after the epilepsy surgery. However, the performance IQ was higher in the older age group after the operation(P=0.011). When the patients were divided into two prognostic groups, the Engel classification after the surgery was the only significant influencing factor(P=0.037). CONCLUSION: The intelligence quotient and memory did not deteriorate after the epilepsy surgery. The overall neuropsychological outcomes improved in about half of the patients. And it was significantly influenced by the seizure outcomes after the surgery.
Key Words: Children, Epilepsy surgery, Neuropsychological outcomes


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