Clinical Outcomes of SEEG-Guided Radiofrequency Thermocoagulation in Children With Focal Drug-Resistant Epilepsy: A...

Stereoelectroencephalography-guided radiofrequency thermocoagulation (SEEG-RFTC) has emerged as a safe and effective minimally invasive treatment for children with drug-resistant focal epilepsy. Although evidence from real-world studies remains limited, numerous pediatric cases have demonstrated promising outcomes. This retrospective study aimed to evaluate the seizure outcomes of SEEG-RFTC in pediatric patients and identify predictive factors associated with seizure freedom.

A retrospective observational study was conducted across two epilepsy centers, including 111 children with drug-resistant epilepsy who underwent SEEG-RFTC. Postoperative outcomes were assessed primarily by the rate of seizure freedom at the last follow-up (minimum 1 year). Potential predictive factors were analyzed through comparisons of clinical, neuroimaging, electrophysiological, and etiological variables.

All patients were followed for at least 1 year post-procedure, with 73 (65.8%) achieving seizure freedom. Among 46 patients with focal cortical dysplasia, the seizure-free rate was 80.4%. In 10 patients with hippocampus sclerosis, 6 (60%) were seizure-free at the final follow-up. Statistical analysis identified the course of illness (p < 0.01) and positron emission tomography (PET) findings (p = 0.01) as significant predictors of seizure freedom.

SEEG-RFTC is a safe procedure that yields favorable outcomes in a substantial proportion of pediatric patients with drug-resistant focal epilepsy. The duration of epilepsy and PET characteristics are significantly associated with the likelihood of achieving seizure freedom. These findings highlight the potential of SEEG-RFTC as a valuable therapeutic option in this population.