Pituitary macroadenoma

Case contributed by Mohammad Taghi Niknejad
Diagnosis almost certain


Headache and recent weight gain.

Patient Data

Age: 60 years
Gender: Male

A 12 x 11 x 9 mm mass is noted in the right pituitary gland. There is remodeling of the sellar floor, which slopes to the right. Displacement of the infundibulum and normal pituitary tissue to the left. There is also slight tilting of the chiasm without chiasmal contact.
On postcontrast images, the mass does not enhance as intense as the surrounding pituitary gland.

Case Discussion

Pituitary macroadenoma is the most common suprasellar mass in adults, and responsible for the majority of transsphenoidal hypophysectomies. They are defined as pituitary adenomas greater than 10 mm in size and are approximately twice as common as pituitary microadenomas

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