Surgical treatment for epilepsy: a retrospective Swedish multicenter study

Area of Science:

• Neurology
• Neurosurgery
• Epileptology

Background:

• Drug-resistant epilepsy affects both children and adults, necessitating effective treatment strategies.
• Surgical interventions are considered for patients with refractory epilepsy.
• Evaluating the success of epilepsy surgery requires comprehensive analysis of patient characteristics and outcomes.

Purpose of the Study:

• To retrospectively analyze the characteristics of patients with drug-resistant epilepsy.
• To evaluate the outcomes of epilepsy surgery in a cohort of children and adults.
• To assess preoperative factors and postoperative results following epilepsy surgery.

Main Methods:

• Retrospective analysis of a 10-year multicenter cohort (1980-1990) of 152 patients (65 children, 87 adults).
• Inclusion of patients treated for drug-resistant epilepsy with follow-up 2 years post-surgery.
• Analysis of patient demographics, seizure characteristics, surgical procedures (resective and palliative), and postoperative outcomes including neurological deficits and seizure control.

Main Results:

• Localization-related epilepsy was prevalent (85% children, 95% adults).
• Two years post-resective surgery, 53% of children and 49% of adults achieved seizure freedom.
• An additional 25% experienced over a 50% reduction in seizure frequency; negative correlation between seizure severity and frequency reduction in non-seizure-free patients.

Conclusions:

• Epilepsy surgery can lead to significant seizure reduction or freedom in a substantial proportion of pediatric and adult patients.
• Postoperative neurological deficits occurred in 9-15% of patients undergoing resective surgery.
• Comprehensive evaluation of epilepsy surgery outcomes should incorporate seizure severity beyond just frequency.