Epilepsy, depth electrode planning. There is possible focal volume loss and T2 hyperintensity in the medial right temporal lobe. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, and scalp soft tissues are grossly unremarkable, including a prominent right occipital arachnoid granulation. There is mucosal thickening in the right anterior ethmoid and frontal sinuses.
Preoperative planning MRI demonstrates probable right medial temporal sclerosis.