HealthDay News — More than half of children treated with magnetic resonance imaging (MRI)-guided laser interstitial thermal therapy (MRgLITT) achieve seizure freedom at 1-year follow-up, according to a study presented at the annual meeting of the American Epilepsy Society, held virtually.

Omar Yossofzai, from the University of Toronto, and colleagues used data from the MRgLITT registry to evaluate outcomes of MRgLITT in 129 children (mean age, 10.7 years) with drug-resistant epilepsy seen at 6 US and 2 Canadian pediatric epilepsy surgery centers.

The researchers found that 86% of patients had abnormal MRI findings, with hypothalamic hamartoma as the most common lesion (33 cases), followed by focal cortical dysplasia (23 cases). In 22% of patients, there were complications relating to MRgLITT, including transient neurologic deficits (16 cases) and permanent neurologic deficits (2 cases). One patient died within 30 days after MRgLITT. Mean length of hospital stay was 3.2 days. Seizure freedom was reported in just over half of 93 patients (56%) for whom 1-year seizure outcome data were available. Twelve patients underwent more than one MRgLITT procedure, and 7 of these patients achieved seizure freedom.

“Compared to surgery, MRI-guided laser therapy can help reduce the risk of injury to critical brain structures and minimize serious neurological deficits,” a coauthor said in a statement.

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