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Within the left side of the pituitary is an ovoid region of hypoenhancement, best seen on dynamic contrast enhanced views, resulting in deviation of the infundibulum towards the right, and upward convexity of the gland. There is no evidence of invasion of the cavernous sinus. The optic chiasm is not compressed.
Conclusion: Features consistent with a pituitary microadenoma, in this clinical setting presumably a growth hormone secreting adenoma.