Early-onset symptomatic focal epilepsy: a dilemma in the timing of surgery

Area of Science:

• Pediatric Neurology
• Epileptology
• Neurosurgery

Background:

• Infantile spasms and focal seizures in early childhood present diagnostic and therapeutic challenges.
• Cortical dysplasia can be difficult to delineate with standard Magnetic Resonance Imaging (MRI).
• Management of refractory epilepsy often requires a multidisciplinary approach, including advanced neuroimaging and invasive monitoring.

Observation:

• A six-year-old boy with a history of infantile spasms and focal seizures exhibited fluctuating seizure control.
• Initial MRI findings suggestive of right parietal cortical dysplasia were subtle and inconsistent.
• Despite trials of anti-epileptic drugs (AEDs) and initial good development, seizures ultimately worsened, accompanied by developmental decline.

Findings:

• Advanced evaluation, including functional imaging and invasive monitoring (subdural grid and depth electrodes), precisely localized the ictal onset zone within the right parietal cortex.
• Surgical resection of the identified right inferior parietal lobe lesion was performed.
• Post-operatively, the patient achieved complete seizure freedom and demonstrated significant developmental advancement.

Implications:

• This case underscores the importance of comprehensive diagnostic workup, including functional imaging and invasive monitoring, for complex pediatric epilepsy cases.
• Early surgical intervention, guided by precise localization, can be highly effective in achieving long-term seizure control and improving neurodevelopmental outcomes.
• The findings support the role of surgical resection in treating focal cortical dysplasia-associated epilepsy refractory to medical management.