 Brain parenchymal morphology is within normal limits. Right middle cranial fossa arachnoid cyst measuring approximately 3.1 x 2.0 cm with mild mass effect on the right anterior temporal lobe. There are minimal punctate foci of abnormal T2/FLAIR hyperintensity within the periventricular (notably periatrial) and subcortical white matter. No edema is detected. Diffusion-weighted images are within normal limits. There is no evidence to suggest intracranial hemorrhage or any abnormal extra-axial fluid collection. There is no pathological intracranial enhancement. The ventricles are normal in size and morphology. The pituitary gland is somewhat smaller than is typically seen.
1. No definite seizure foci are identified.2. Nonspecific white matter FLAIR intensity may reflect microvascular ischemic disease.3. Right middle cranial fossa arachnoid cyst.