New onset seizure. Examination demonstrates diffuse edema in the right frontal lobe and genu of corpus callosum. The appears slightly effacement of the frontal horn of the right lateral ventricle. These findings have been unchanged since prior MRI. There is no intracranial hemorrhage, midline shift or abnormal extra-axial fluid collection. The ventricles are normal in size and symmetric.The visualized paranasal sinuses and mastoid air cells are normally pneumatized. In view of the orbits is unremarkable. The calvarium is intact.
Right frontal cerebral edema with involvement of the genu of corpus callosum likely represent underlying tumor (primary versus metastasis). 