T2 hypointense T1 isointense vividly enhancing mass applied to the floor of the anterior cranial fossa left of midline has dimensions of 3.4 x 3.6 x 4.6 cm. There is extensive vasogenic oedema through the left frontal lobe and into the genu of the corpus callosum. The anterior aspect of the falx is deviated toward the right, with 12 mm subfalcine herniation. No uncal herniation. No evidence of extension of tumour into orbit, ethmoid or nasal cavity. No further intracranial mass or site of pathological contrast enhancement. A few tiny T2 hyperintense white matter foci are compatible with patient age. No hydrocephalus.