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Bilateral periventricular and subcortical heterotopia in a man with refractory epilepsy
S M Sisodiya1, S L Free, J S Duncan
1University Department of Clinical Neurology, Institute of Neurology, University College London, England. sisodiya@ion.ucl.ac.uk
Purpose:
To report a novel malformation in a male subject with refractory partial seizures.
Methods:
Magnetic resonance imaging (MRI) and data reformatting in a subject referred for management of partial seizures.
Results:
The patient had four distinct partial seizure types, without learning disability. MRI demonstrated the novel association of bilateral laminar subcortical heterotopia, bilateral temporal periventricular heterotopia, and hippocampal malformation.
Conclusions:
This previously unreported complex bilateral neocortical and archicortical malformation in a male patient cannot be explained by known genetic causes of heterotopia, raising the possibility of a novel gene involved in brain formation.
Insights
A male patient with refractory partial seizures presented with a unique brain malformation. This complex bilateral neocortical and archicortical malformation suggests a potential novel gene involved in brain development.
Area of Science:
- Neuroscience
- Developmental Biology
- Neuroradiology
Background:
- Refractory partial seizures can be associated with various brain abnormalities.
- Understanding the spectrum of malformations is crucial for diagnosis and management.
Observation:
- A male patient with refractory partial seizures exhibited four distinct seizure types without cognitive impairment.
- Magnetic resonance imaging (MRI) revealed a novel combination of bilateral laminar subcortical heterotopia, bilateral temporal periventricular heterotopia, and hippocampal malformation.
Findings:
- The MRI findings represent a complex, previously unreported bilateral neocortical and archicortical malformation.
- This specific malformation pattern in the patient was not explained by known genetic causes of heterotopia.
Implications:
- The findings suggest the possibility of a novel gene implicated in human brain formation.
- Further research into this unique malformation could advance our understanding of neurodevelopmental disorders.