Preoperative planning for laser ablation surgery: epilepsy. There is no significant interval change in the lesion with extensive susceptibility effect and an adjacent developmental venous anomaly within the periatrial white matter of the left temporal lobe. There is also no significant interval change in the smaller lesion with extensive susceptibility effect in the posterior left cingulate gyrus. There is no evidence of acute infarct or vasogenic edema. There are a few nonspecific foci of high T2 signal scattered within the cerebral white matter. The ventricles and basal cisterns are unchanged in size and configuration. There is an unchanged left middle cranial fossa arachnoid cyst. 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.
No significant change in the probable cavernous malformations in the left cerebral hemisphere.