A suprasellar/hypothalamic mass has eroded the dorsum sellae and compressed the pituitary gland inferiorly (seen as separate from the mass).
On sagittal T2 images, the right optic nerve is elevated and can be followed towards the midline blending with the chiasm which is expanded by the mass. The left optic nerve is expanded. On coronal T2 images, the expanded optic chiasm is more easily identified with extension posteriorly into the left optic tract and into surrounding structures.
The mass has heterogeneous diffusion restriction without areas of profound restriction. Much of the mass demonstrates prominent enhancement (only dynamic post-contrast images available) and this is slower than the adjacent pituitary gland. No cystic components.