Total callosotomy for a case of lissencephaly presenting with West syndrome and generalized seizures
T Kamida1, T Maruyama, M Fujiki
1Department of Neurosurgery, Oita University Faculty of Medicine, 1-1 Idaigaoka, Hasama-machi, Oita, 879-5593, Japan. kamida@med.oita-u.ac.jp
Insights
This case report highlights a rare instance of West syndrome in an infant with lissencephaly. Corpus callosotomy effectively reduced intractable seizures and improved developmental trajectory.
Area of Science:
- Pediatric Neurology
- Epileptology
- Neuroscience
Background:
- West syndrome, a severe infant epilepsy, is often associated with underlying brain abnormalities.
- Lissencephaly, a malformation of cortical development, presents significant neurological challenges.
- Intractable seizures in infants necessitate exploration of advanced therapeutic options.
Observation:
- An 11-month-old infant with lissencephaly presented with medically intractable West syndrome and generalized tonic seizures.
- Electroencephalography (EEG) revealed hypsarrhythmia and focal epileptiform discharges.
- Magnetic Resonance Imaging (MRI) confirmed severe bilateral lissencephaly.
Findings:
- Total callosotomy was performed at 11 months of age.
- Postoperatively, there was a prominent decrease in seizure frequency.
- The infant demonstrated resumed developmental progression after the surgical intervention.
Implications:
- This case suggests the corpus callosum's significant role in certain forms of symptomatic West syndrome.
- Corpus callosotomy emerges as a viable surgical consideration for carefully selected cases of symptomatic West syndrome.
- Timing of surgical intervention is a critical factor in managing intractable infant epilepsies associated with brain malformations.
Case Report:
An 11-month-old girl had an onset of oculogyric crisis at 2 months and she presented with epileptic spasms and generalized tonic seizures with series formation at 3 months. Her seizures were medically intractable and her development had gradually regressed after that. MRI showed severe lissencephaly in bilateral hemispheres. Interictal EEG showed hypsarrhythmia periodically and sporadic spike waves in the right hemisphere. The generalized tonic seizures began with bi-frontal polyspikes on EEG. Our diagnosis was lissencephaly presenting with West syndrome and generalized tonic seizures. A total callosotomy was performed at 11 months.
Outcome:
Postoperative frequency of seizures decreased prominently and developmental progression was resumed.
Conclusions:
This case showed that the corpus callosum may play an important role in some types of symptomatic West syndrome. Corpus callosotomy for treating symptomatic West syndrome should be considered as an option after careful selection and consideration of the timing of surgery.
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