Stalk

A stem. Usually refers to the pituitary stalk that connects the pituitary gland to the hypothalamus. A stem. Usually refers to the pituitary stalk that connects the pituitary gland to the hypothalamus.

Stent

Device used to maintain a bodily orifice or cavity during skin grafting, or to immobilize a skin graft after placement. Slender thread, rod, or catheter, lying within the space in the interior of a tubular structure, such as an artery or the intestine. Used to provide...

Stereotactic Radiosurgery

A radiation therapy technique that uses a large number of narrow, precisely aimed, highly focused beams of ionizing radiation. The stereotactic radiosurgery beams are aimed from many directions circling the head, and meet at a specific point. Stereotactic radiosurgery...

Steroids

See glucocorticosteroids. Also called: Corticosteroids, Glucocorticoids. Anabolic steroids can have harmful effects, but corticosteroids treat a variety of problems. Corticosteroids steroids are similar to hormones that the adrenal glands produce to fight stress...