Pediatric intractable epilepsy: the role of presurgical evaluation and seizure outcome

Area of Science:

• Pediatric Neurology
• Neurosurgery
• Epileptology

Background:

• Long-term surgical outcomes in childhood intractable epilepsy are less documented than in adults.
• Presurgical evaluation and prognostic factors require further investigation for pediatric epilepsy surgery.

Purpose of the Study:

• To evaluate presurgical diagnostic modalities in pediatric intractable epilepsy.
• To identify factors predicting successful seizure control after epilepsy surgery in children.

Main Methods:

• Retrospective review of 38 children with intractable epilepsy undergoing surgery.
• Analysis of preoperative evaluation modalities including MRI, EEG, PET, and neuropsychological testing.
• Assessment of seizure control using Engel classifications at a minimum 12-month follow-up.

Main Results:

• 26 out of 38 patients achieved favorable seizure control (Engel I/II).
• PET and neuropsychological testing demonstrated high positive results; MRI correlated best with EEG.
• Temporal resections with discrete MRI lesions yielded the best seizure outcomes.
• Extratemporal resections were associated with less favorable results.

Conclusions:

• Epilepsy surgery is beneficial for children with intractable epilepsy.
• Invasive studies should be reconsidered based on resection area and MRI lesion presence.
• Presurgical evaluation, particularly MRI and lesion identification, is crucial for surgical success in pediatric epilepsy.