Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «G»:
Giant cell tumor, malignant
Giant cell tumor, malignant: A type of bone tumor characterized by massive destruction of bone near the end (epiphysis) of a long bone. The site most commonly struck by this tumor is the knee -- the far end of the femur and the near end of the tibia. The tumor is often coated by new bony growth. It ...
Giant hypertrophic gastritis
Giant hypertrophic gastritis: A premalignant disorder of the stomach characterized by overgrowth of the stomach lining (the gastric mucosa) and hypoalbuminemia (low blood serum level of albumin) due to loss of albumin by the stomach. The abnormalities of the stomach are highly characteristic with g...
Giant hypertrophy of gastric mucosa
Giant hypertrophy of gastric mucosa: See: Giant hypertrophic gastritis....
Giant intestinal fluke
Giant intestinal fluke: Fasciolopsis buski. See: Fasciolopsis....
Giant platelet syndrome
Giant platelet syndrome
(Bernard-Soulier syndrome):This condition is a primary problem of platelets in which the platelets lack the ability to stick adequately to injured
blood vessel walls and as a
result of this problem there is abnormal
The giant platelet syndrome usually prese...
Giardia: A genus of protozoa that infect the gastrointestinal tract of some animals, including humans. Giardia have a large sucking disk which permits them to adhere to the intestinal lining. The species that infects humans (and causes diarrhea) is Giardia lamblia.
Named after the French biologis...
Giardia lamblia: A parasite responsible for a contagious form of diarrhea. The parasite is most commonly transmitted through direct contact with
infected feces or by eating food or drinking water contaminated by feces. Giardia is one of the most common intestinal parasites in the world. The diseas...
Giardiasis: Infection with Giardia lamblia....
Gibbon: See: Gibbon, John H., Jr....
Gibbon heart-lung machine
Gibbon heart-lung machine: The first heart-lung machine. Named for the American physician John H. Gibbon who built it in 1937. This machine used two roller pumps and could replace the heart and lungs of a cat but was too small for dogs or humans. Gibbon joined forces in 1946 with Thomas Watson, an e...
Gibbon, John H., Jr.
Gibbon, John H., Jr.: American cardiovascular surgeon (1903-1973) who performed the world's first successful open-heart operation using a heart-lung machine that totally bypassed the heart. Research and work with cats and dogs prepared the heart-lung machine for a human subject. On May 6, 1953, Dr. ...
GIFT: A technique in which the male and female cells required to begin reproduction are injected into the fallopian tubes of the female for fertilization. This technique is one of the methods doctors use to overcome infertility, the inability of couples to produce offspring on their own. The acronym...
Gigantism: Excessive growth both in height and specific body parts. Gigantism with extreme height may be associated with disorders of pituitary gland, which may oversecrete human growth hormone (somatotrophin) during childhood before the bones fuse. Excessive growth of specific body parts is also a ...
Gigantism, eunuchoid: Extremely tall stature due to the delayed onset of puberty which permits the continued growth of the long bones before their growing ends (epiphyses) fuse and growth stops....
Gigantism, focal: Excessive growth of specific body
parts such as an arm, the tongue, or a combination of specific body
parts as is seen in Beckwith-Wiedemann syndrome or
This type of gigantism may occur before or after the bones fuse. If it occurs afterwards, it causes disfigurement...