History of seizure disorder diagnosed 1 year ago who presents with increased seizure frequency. There are unchanged linear subcortical T2 hyperintense bands in the left superior frontal gyrus that extend towards the lateral ventricle with associated blurring of the grey-white matter junction, which may represent a radial migration band. There is no evidence of intracranial hemorrhage, mass, or acute infarct. There is no abnormal intracranial enhancement. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
Bands of subcortical T2 hyperintensity in the left superior frontal gyrus may indicate underlying malformation of cortical development.