• Journal of Korean Neurosurgical Society
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• 제29권9호
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• pp.1195-1203
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• 2000

Objective : To confirm the efficacy of functional hemispherectomy and peri-insular hemispherotomy on treatment of intractable epilepsy. Materials & Methods : From April 1997 to February 1999, we performed 1 functional hemispherectomy and 6 peri-insular hemispherotomy in 7 consecutive patients. These procedures result in completely disconnected hemisphere while maintaining the disconnected portion of the hemisphere intact within the surgical cavity. The indications were hemimegalencephaly in 2 cases, infarction with encephalomalacia in 2, Sturge-Weber syndrome in 1, hemiconvulsion hemiplegia epilepsy syndrome in 1, cortical dysplasia with leptomeningeal cyst in 1. Mean follow-up is 15.8 months(range 8-28 months). Results : Among 7 patients, 1 patient died immediately after peri-insular hemispherotomy. Five patients became seizure free with reduced doses of medications. One patient developed rare disabling seizure with medication. In 6 patients, there were improvements in the function of the hemiparetic limbs in the postoperative phase. A 3-year-old boy with infarction and encephalomalacia died few hours after surgery due to postoperative hypothermia. Two patients required shunt after surgery. Two patients developed postoperative brain swelling but were successfully managed with conservative care. Conclusion : In conclusion, functional hemispherectomy and peri-insular hemispherotomy may provide substantial seizure control in selected cases of young hemiplegic patients with intractable epilepsy.

• Journal of Korean Neurosurgical Society
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• 제41권5호
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• pp.283-290
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• 2007

Objective : This study was designed to analyze seizure outcome and to investigate the prognostic factors for predicting seizure outcome according to the preoperative evaluations, surgical procedures, topectomy sites and histopathological findings in patients with extratemporal lobe epilepsy [ETLE]. Methods : This study comprised 63 patients with ETLE who underwent surgery. Preoperative evaluations included semiologic analysis, chronic video-EEG monitoring, and neuroimaging studies. Surgical procedures consisted of topectomy in 51 patients, corpus callosotomy in 9, functional hemispherectomy in 2, and vagus nerve stimulation [VNS] in 1. Histopathological findings were reviewed. Postoperative seizure outcomes were assessed by Engel's classification at the average follow up period of 66.8 months. Chi-square test was used for statistics. Results : Total postoperative seizure outcomes were class I in 51 [80%] patients, class II in 6 [10%], class III in 6 [10%]. Patients with structural abnormalities on neuroimaging study showed class I in 49 [88%] patients [p<0.05]. Patients with focal and regional ictal EEG onset revealed class I in 47 [90%] patients [p<0.05]. Semiologic findings, surgical procedures, topectomy sites and histopathological findings did not show statistical correlation with seizure outcome [p<0.05]. Conclusion : A good seizure outcome was obtained in patients with ETLE. The factors for favorable seizure outcome are related to the presence of structural abnormalities on neuroimaging study, and focal and regional ictal EEG onset.