The Clinical Study of Localization of Epileptogenic Foci and Surgical Treatment / 昆明医科大学学报

ABSTRACT

From July of 1989 to January of 1991,we performed surgical operations on 20 cases with intractable epilepsy.The preoperative localization of epileptogenic foci was based on a comprehensive evaluation of patients'seizure history,scalp EEG,topographic EEG display, cranial electrode recording,CT and neuropsychological investigations.Then,we selected an adequate surgical treatment,including 1 case of hemispherectomy,10 cases of anterior tem- poral lobectomy and 8 cases of extratemporal resection of the epileptogenic focus.Detected by electrocorticography and electrical stimulation monitoring,16 postoperative cases(80%) had seizure free and 4 cases(20%)had a more than 50% reduction in seizure frequency. The localization of epileptogenic foci,and surgical method and effect were discussed in detail. The key of surgical selection is to exactly localize epileptogenic foci with a comprehensive evaluation of various recordings and studies.The intracranial electrode recording is important for the localization of an epileptogenic focus.