There is a large right frontal region extra-axial tumour that is solid and hyperdense, with some flecks of peripheral calcification, cause significant mass effect pushing the adjacent brain parenchyma, with subfalcine herniation. The lesion causes a permeative frontal bone erosion/hyperostosis with an extra-cranial extension into the right paranasal sinus. A small lesion with similar characteristics, but smaller, is also present adjacent to the left anterior clinoid process.