Into a muscle.


Within the sella turcica.


Into a tumor (usually performed during surgery).


Within the uterus.


Into a vein.

Intravenous Pyelography (IVP)

Radiography of kidneys, ureters, and bladder following injection of contrast medium into a peripheral vein.


Into a ventricle.


Refers to a tumor that invades healthy tissues. The opposite of encapsulated. Also called diffuse or infiltrating.


Immunoradiometric assay.


Treatment by ionizing radiation, such as x-rays, or radioactive sources such as radioactive iodine seeds.


Irritable Bowel Syndrome

Characterized by abdominal pain and altered bowel function – alternating bouts of constipation and diarrhea.

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The Pituitary Patient Resource Guide Sixth Edition is now available! Be one of the first to have the most up-to-date information. The Pituitary Patient Resource Guide a one of a kind publication intended as an invaluable source of information not only for patients but also their families, physicians, and all health care providers. It contains information on symptoms, proper testing, how to get a diagnosis, and the treatment options that are available. It also includes Pituitary Network Association's patient resource listings for expert medical care.

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If you are a nurse or medical professional, register for PNA CEU Membership and  earn CEU credits to learn about the symptoms, diagnosis and treatment options for patients with pituitary disorders. Help PNA reduce the time it takes for patients to get an accurate diagnosis.

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