alexa Lennox-Gastaut syndrome symptomatic to hypothalamic hamartoma: evolution and long-term outcome following surgery.
Neurology

Neurology

Journal of Neurology & Neurophysiology

Author(s): Pati S, Deep A, Troester MM, Kossoff EH, Ng YT

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Abstract BACKGROUND: Lennox-Gastaut syndrome is a catastrophic childhood cryptogenic or symptomatic epilepsy. Hypothalamic hamartomas cause refractory epilepsy often consistent with Lennox-Gastaut syndrome. METHODS: Children with Lennox-Gastaut syndrome were defined by a triad of multiple generalized seizure types, slow spike-and-wave on EEG, and mental retardation. RESULTS: Twenty-one of 159 hypothalamic hamartoma patients (14\%) met the diagnostic criteria of Lennox-Gastaut syndrome. The median age of patients at epilepsy onset was 0.9 years (range, birth to 9 years). Six of the 21 patients (28\%) had preceding infantile spasms. All patients underwent different surgical approaches, including endoscopic, transcallosal, orbitozygomatic resections, and radiosurgery treatment. Five of the 21 (24\%) were seizure free with an additional 9 (42\%) having at least >90\% seizure reduction. Only 1 patient was not effectively treated (<50\% seizure reduction). Eighty-eight percent of parents reported improvement in behavioral functioning. Shorter duration of epilepsy prior to surgery was a significant predictor of surgical outcome. CONCLUSIONS: Patients with Lennox-Gastaut syndrome symptomatic to hypothalamic hamartomas have better postsurgical outcome due to other etiologies compared with cryptogenic and symptomatic Lennox-Gastaut syndrome patients. However, compared with overall hypothalamic hamartomas postsurgical outcomes, this cohort was less favorable. Earlier surgery may lead to better outcomes. Copyright © 2013 Elsevier Inc. All rights reserved. This article was published in Pediatr Neurol and referenced in Journal of Neurology & Neurophysiology

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