CT shows a right frontal extra-axial mass with a dural tail, displacing the adjacent parenchyma in the right frontal lobe. The right lateral ventricle is partially effaced. The third and 4th ventricles are normal. The adjacent calvaria presents a permeative aspect with lytic areas and expansion of the diploe. Brainstem and cerebellum are normal. Basal subarachnoid cisterns are within normal range. No focal parenchymal lesions are observed.