Pituitary Glossary starting with S
Sublabial
Below the lips or labium.
Surgical incision below the lip, above the front teeth in the gum line, providing access to the nostril, or followed by splitting the palate (bone) to eventually access the sphenoid sinus.
Subsellar
Extending below the sella turcica.
The sella turcica is the bony structure at the base of the skull in which the pituitary gland rests.
Supraorbital
Above the orbit.
Situated or occurring above the orbit (eye socket, orbital cavity) of the eye.
Suprasellar
Extending above the sella turcica.
The sella turcica is the bony structure at the base of the skull in which the pituitary gland rests.
Syndrome of Inappropriate Antidiuretic Hormone Secretion (SIADH)
Impaired water excretion.
Water excretion is caused by the hyponatremia and hypo-osmolality resulting from innappropriate, continued secretion or action of the hormone despite normal or increased plasma volume.
Systemic
Circulating throughout the body.
Affecting the entire body rather than a single organ or body part. Systemic disorders such as high blood pressure and systemic diseases such as influenza affect the entire body. A systemic infection is an infection in the bloodstream. A localized infection is only affecting one body part or organ.
