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Author Spotlight: Advancing Pediatric Epilepsy Surgery in Children Through Novel Biomarkers and Enhanced Localization
Published on: September 20, 2024
Challenges in managing epilepsy associated with focal cortical dysplasia in children
Lily C Wong-Kisiel1, Thomas Blauwblomme2, Mai-Lan Ho3
1Department of Neurology, Mayo Clinic, 200 First St., SW, Rochester, MN, 55905, USA.
Insights
Focal cortical dysplasia (FCD) is a common cause of drug-resistant epilepsy in children. Early diagnosis and surgical evaluation can lead to seizure freedom and improved neurocognitive outcomes.
Area of Science:
- Pediatric Neurology
- Epileptology
- Neuroscience
Background:
- Focal cortical dysplasia (FCD) is the leading cause of intractable pediatric epilepsy.
- Seizures in FCD are often pharmacoresistant from the onset.
- Understanding FCD's epidemiology, natural history, and epileptogenesis is crucial.
Purpose of the Study:
- To review current knowledge on FCD, including its epidemiology, natural history, and mechanisms of epileptogenesis.
- To highlight advances in neuroimaging for subtle FCD detection.
- To guide clinicians in identifying diagnostic evidence of FCD.
Main Methods:
- Comprehensive literature review of FCD.
- Analysis of neuroimaging and neurophysiology findings.
- Discussion of treatment modalities.
Main Results:
- Neuroimaging advancements improve FCD recognition, despite its subtle nature.
- FCD management often requires non-pharmacologic options due to drug resistance.
- Early surgical evaluation is key for seizure control and neurocognitive benefits.
Conclusions:
- Timely recognition of FCD in early-onset epilepsy is critical.
- Resective surgery offers significant potential for seizure freedom.
- Surgical intervention can positively impact neurocognitive outcomes in pediatric epilepsy patients with FCD.
Abstract:
Focal cortical dysplasia (FCD) is the most common cause of intractable focal epilepsy in children, in whom seizures are most commonly pharmacoresistant from onset. This review summarizes the current understandings of the epidemiology, natural history, and the proposed mechanisms of epileptogenisis in FCD. Advances in neuroimaging techniques have enhanced the recognition of this pathology, which can be subtle. Illustrative neurophysiology and imaging examples are provided to help the clinicians identify diagnostic evidence of suspected FCD. Given the refractory course to pharmacologic management, alternative options such as ketogenic diet, resective surgery or neuromodulation can be considered. Recognition of FCD pathology in children with early onset epilepsy should prompt timely evaluations for resective surgery, which may render a significant number of patients seizure-free and improve neurocognitive outcome.
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