Progressive glioblastoma. There are postoperative findings related to right pterional craniotomy. There has been slight interval increased in size of the heterogeneously enhancing, infiltrative mass involving the right basal ganglia, insula, temporal lobe, optic chiasm, midbrain, and pons, which measures up to approximately 8 cm. The tumor appears to encase the right posterior cerebral artery. There are numerous scattered punctate foci of susceptibility effect in the mass. There is surrounding infiltrative T2 hyperintensity and evidence of Wallerian degeneration in the right medulla. There is also persistent diffuse bilateral periventricular T2 hyperintensity and an area of subcortical white matter T2 hyperintensity in the inferior left frontal lobe, without associated enhancement. There is no evidence of acute territorial infarction. There is trace midline shift to the left. There is no significant ventricular effacement or enlargement. The orbits are grossly unremarkable.
Slight interval increase in size of extensive tumor involving the right basal ganglia, insula, temporal lobe, optic apparatus, midbrain, and pons. Persistent diffuse bilateral periventricular T2 hyperintensity and an area of subcortical white matter T2 hyperintensity in the inferior left frontal lobe, without associated enhancement are nonspecific. 