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  • Title: Stereotactic laser interstitial thermal therapy corpus callosotomy for the treatment of pediatric drug-resistant epilepsy.
    Author: Mallela AN, Hect JL, Abou-Al-Shaar H, Akwayena E, Abel TJ.
    Journal: Epilepsia Open; 2022 Mar; 7(1):75-84. PubMed ID: 34758204.
    Abstract:
    OBJECTIVE: Corpus callosotomy is a safe and effective procedure for reducing the frequency of drop attacks. MR-guided laser interstitial thermal therapy (MRgLITT) offers a minimally invasive alternative to conventional open craniotomy for callosotomy. We hypothesized that MRgLITT callosotomy could be safely performed in pediatric patients with similar seizure control. METHODS: We present an institutional case series of 11 procedures in 10 patients for the treatment of drop attacks in drug-refractory primary generalized epilepsy. MRgLITT was used for complete callosotomy, anterior two-thirds, posterior, or ablation of residual callosal fibers following prior callosotomy (open or MRgLITT). We retrospectively reviewed clinical course, operative details, radiographic imaging, clinical outcomes, and complications. RESULTS: Operative time ranged from 4-8 hours, and median hospitalization was 2 days. No complications were encountered. Among the 7 patients with at least 3 months of follow-up, 71% experienced freedom from drop attacks at longest follow-up and 57% of cases showed improvement in their other seizure semiologies as well (Engel Class II: 28%, Class III: 28%, Class IV: 43%). SIGNIFICANCE: MR-guided LITT callosotomy is safe and effective modality in the management of pediatric patients with medically intractable epilepsy characterized by drop attacks. While this is among the largest pediatric series to date, further studies are required to delineate its safety and efficacy among such patients.
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