Depth electrode for seizures. There is a left transparietal depth electrode that terminates in the left medial temporal lobe region, a left transtemporal depth electrode that also terminates in the left medial temporal lobe region, and another depth electrode that terminates in the left thalamus region. There is new diffuse T2 hyperintensity along the left hippocampal tail, adjacent to an electrode. There is also a newly apparent T2 hyperintense lesion in the splenium of the corpus callosum. The ventricles are unchanged is size.
1. Multiple left cerebral hemisphere depth electrodes in position and new edema along the left hippocampal tail, adjacent to an electrode, which may be related to seizure activity.2. Newly apparent lesion in the splenium of the corpus callosum, which may be related to seizure activity, antiepileptic medications, or viral infection, for example.