CT
There is an eccentric circumscribed left suprasellar extra-axial mass lesion with dystrophic calcifications. There is expansion of the intracranial left optic canal, however normal optic foramen and no intra-orbital extension. There is enhancement post-contrast administration. The lesion is inseparable from the left A1 and M1 segments. There is no hyperostosis regionally. The sella turcica is expanded with a flattened pituitary gland and a posterior pituitary stalk.
The primary consideration is of a planum sphenoidal or olfactory groove meningioma, however, an aneurysm is difficult to exclude on this suboptimal post contrast study.