Right hemisphere onset epilepsy since childhood. EEG from both Cleveland Clinic and University of Michigan showed sharp waves at right parieto-occipital region. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma appears unremarkable. On particular, the bilateral hippocampi appear to be intact. There is no evidence of heterotopia. 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.
No seizure foci are identified, although the sensitivity for subtle cortical malformations may be limited with 1.5 T MRI.