An acronym of light amplification by stimulated emission of radiation.


In radiology, slang for a lateral X-ray.

Lateral View

On the side.



Lean body mass.


Low-density lipoproteins


Sluggishness, drowsiness, indifference.


The luteinizing hormone.


The Luteinizing Hormone Releasing Hormone; another name for GnRH.


Leukemia inhibiting factor.


In the area of the tumor; confined to one specific area.

Lumbar Puncture

Spinal tap. Needle penetration into the subarachnoid space of the lumbar spine.

Lumen, Pl. Lumina, Lumens

The space in the interior of a tubular structure, such as an artery or the intestine.


A clear, transparent, sometimes faintly yellow and slightly opalescent fluid that is collected from the tissues throughout the body

Available Now!

PPRG6-500 Cover
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.

Buy Now

  • CalendarPNAJune


Continuing Education Program

Knowledge Icon 500

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.

button registerNow

For more information click here!