Abstract
SummaryMalformations of cortical development are associated with epilepsy and cognitive dysfunction, and can occur in patients with SCN1A ion channel mutations. We report a novel and subtle bandlike subcortical heterotopia on integrated positron emission tomography–magnetic resonance imaging ( PET‐MRI) in a patient with treatment‐resistant epilepsy due to a de novo KCNQ1 frameshift mutation. Our case highlights the potential for other channel mutations to cause both epilepsy and cortical malformations. Further scrutiny of high contrast resolution MRI studies is warranted for patients with KCNQ1 and other epilepsy genes to further define their extended phenotype.
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