25 years, Male, intractable epilepsy. Preoperative depth electrode placement.. Examination is obtained for operative planning and intraoperative navigation. The right hippocampus again demonstrates abnormal T2 hyperintensity with loss of internal architecture and volume loss consistent with mesial temporal sclerosis. Findings are better appreciated on prior MRI with epilepsy protocol sequences. Remainder of the brain parenchyma appears unremarkable on the available sequences. No intracranial mass or mass effect is seen. No abnormal parenchymal or meningeal enhancement. No hydrocephalus. No extra-axial collections. Significant mucosal thickening involving the right maxillary sinus is noted. Bone marrow signal and extracranial soft tissues are unremarkable.
Examination for operative planning prior to depth electrode placement. Evidence of right mesial temporal sclerosis again seen and better assessed on prior dedicated epilepsy MRI studies.