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There is an isodense grey matter extraaxial lesion in the frontal region. The lesion is centred on the planum sphenoidale. Buckling of the white matter. The lesion displaces the anterior corpus callous - rostrum and genum. The lesion abuts the optic chiasm and pituitary stalk. There is displacement of the frontal horns of the lateral ventricle and associated hydrocephalus with enlargement of the lateral ventricles. There is minimal perifocal oedema of the adjacent brain, predominantly of the right frontal lobe.
The appearance is most keeping with a meningioma in the anterior cranial fossa.