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The large well defined, predominantly homogeneous, sellar-suprasellar lesion is noted involving pituitary gland.
It appears isointense on T1WI and hyperintense on T2WI and FLAIR images with moderate heterogeneous enhancement on post-contrast study.
Slight restricted diffusion is also seen on DWI images.
No e/o obvious blooming is noted on GRE images to suggest internal hemorrhage.
It is causing severe mass effect in form of displacement of bilateral thalami, optic chiasm (Left >> Right) fornices, bilateral ICA, with relative straightening of brain stem.
The mass appears to be encasing the cavernous portion of left ICA, highly suspicious of cavernous sinus invasion on the left side.
It shows small approx. 1cm sized outpouchings along bilateral superior aspects with mildly indenting and compressing on bilateral thalami (Left >> Right).