Epilepsy There is irregularity and thickening of the cortex along the right sylvian fissure (mostly posteriorly) compatible with polymicrogyria. This involves the right frontotemporal and parietal opercula including the supramarginal gyrus.Remainder of the brain demonstrates no intracranial mass or mass effect. No abnormal parenchymal or meningeal enhancement. No findings to suggest cortical dysplasia or heterotopic gray matter. Ventricles are within normal limits without evidence of hydrocephalus. No extra-axial collections. Major flow-voids are intact. Calvarium and extracranial structures unremarkable.
Findings most consistent with polymicrogyria along the sylvian fissure involving the right frontal, temporal, and parietal lobes.