Dictionary

gas chromatography See chromatography, gas.

gas, laughing See nitrous oxide.

gas, intestinal See flatulence; flatus.

gargoylism See Hurler syndrome.

Gareis-Mason syndrome See MASA syndrome.

Gardner syndrome A variant of familial adenomatous polyposis characterized by the combination of polyps of the colon, tumors in extra-bowel sites (especially osteomas), and a characteristic abnormality of the retina of the eye. See also familial adenomatous polyposis.

gangrene Tissue death due to loss of adequate blood supply. Sometimes bacteria invade such tissue and accelerate its decay. Dry gangrene is the death of tissue due to vascular insufficiency without bacterial invasion in which the tissue dies, loses sensation and simply dries up, blackens, and shrivels. Dry gangrene eventually requires amputation. Gas gangrene occurs…

gangliosidosis, GM2 See Sandhoff disease.

gangliosidosis, GM1 See GM1-gangliosidosis.

ganglion 1 An aggregation of nerve cell bodies. 2 A tendon cyst, commonly near the wrist.

gamma knife A tool that uses highly focused beams of gamma radiation to perform neurosurgery without making an incision. A gamma knife is used to treat many types of brain tumors as well as arteriovenous malformations and other conditions of the brain. See also radiation therapy, stereotactic.

gamete intrafallopian transfer An assisted reproductive procedure for the treatment of infertility in which a woman’s eggs are removed, mixed with sperm, and placed into the fallopian tube via a laparoscopic procedure. Abbreviated GIFT. GIFT allows the fertilization process to take place inside the fallopian tubes rather than inside the laboratory. GIFT involves stimulation of…