PRE-OP STEALTH: Seizures. There is a lesion with surrounding susceptibility effect in the anterior temporal lobe that measures up to approximately 15 mm. The previously demonstrated T2 hyperintensity involving the left medial temporal lobe appears to have subsided. 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. There are skin fiducial markers present.
Preoperative planning MRI demonstrates a probable cavernous malformation in the anterior left temporal lobe.