Pituitary tumors are abnormal growths that develop in your pituitary, a bean-sized gland located at the base of your brain that controls growth-regulating hormones, metabolism, your stress response and functions of your sex organs.
A pituitary tumor can cause many symptoms, depending on its size, location, and whether it results in overproduction or underproduction of hormones.
Latest diagnostic techniques. In Cushing's syndrome, small pituitary tumors that lead to an excess release of adrenocorticotropic hormone (ACTH) are often too small for detection by traditional magnetic resonance imaging (MRI). Mayo Clinic's high-field, 3-tesla (3-T) MRI provides better viewing of these tumors.
When needed, Mayo Clinic's neuroradiologists are experienced in performing inferior petrosal sinus sampling to help find and identify the tumor. This test involves obtaining a sample from these sinuses, where the pituitary gland drains hormones into the bloodstream, including ACTH.
Mayo Clinic in Rochester, Minn., ranks No. 1 for diabetes and endocrinology in the U.S. News & World Report Best Hospitals rankings. Mayo Clinic in Jacksonville, Fla., and Mayo Clinic in Scottsdale, Ariz., are ranked high performing for diabetes and endocrinology by U.S. News & World Report.
Read more about diagnosis and treatment of pituitary tumors.
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