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Brain MRI (a) large suprasellar mass T1-isointense to grey matter. (b–d) Vivid homogeneous T1 contrast enhancement of the lesion. (e) Axial T2-weighted images show a iso-to-hyperintense mass with a small cystic component (red arrows). (f) The mass compresses the optic chiasm, with oedematous swelling of the chiasm and both optic tracts (yellow arrow).
