How are pituitary adenomas diagnosed?

If your doctor thinks you might have a pituitary adenoma, he or she will do a full review of your symptoms and your medical background, and will perform a physical exam. Lab tests might be done to check the hormone levels in your blood. An imaging test, such as an MRI or CT scan*, can show a growth on the pituitary. These tests can confirm the diagnosis of a pituitary adenoma. If you are having problems with your sight, the doctor might also have you take a visual field test to check your eye function. Sometimes, pituitary adenomas are found by accident when an MRI or CT is being done for another condition.

*An MRI uses a large magnet, radio waves, and a computer to create clear images of the body. CT uses computers to combine many X-ray images into cross-sectional views of the inside of the body.

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