Abstract

It is well recognized that two-thirds of patients with drug-resistant temporal lobe epilepsy will be free of disabling seizures with continued medical treatment after temporal resection. Seizure recurrence has been noted during a five-year follow-up in approximately one-third of these seizure-free patients mostly but not exclusively following planned complete discontinuation of antiepileptic drugs (AEDs). This leaves one-third of patients without disabling seizures and without AEDs several years after surgery. Despite improvements in seizure frequency or severity, seizures persist in another third of patients undergoing surgery. Although cure (five years without any seizures and off AEDs) is the ultimate aim of epilepsy surgery, the percentage of patients cured by surgery cannot be well defined at the moment. We need a long-term randomized controlled trial on AED discontinuation in seizure-free patients followed by long-term open extension to determine if only one in three adult patients with drug-resistant temporal lobe epilepsy is cured by surgical intervention.

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