| GI | <anatomy> Pertaining to or communicating with the stomach and intestine, as a gastrointestinal fistula. (18 Nov 1997) |
|---|---|
| GI bleeding | This describes any bleeding that may occur along the coarse of the gastrointestinal tract. This includes bleeding from the oesophagus, stomach, duodenum, small intestine, large intestine, rectum or anus. (27 Sep 1997) |
| GI endoscopy | <procedure> A diagnostic procedure which involves the introduction of a flexible fibreoptic scope into the lower or upper gastrointestinal tract for diagnostic or therapeutic purposes. (27 Sep 1997) |
| GI-tract secretions | <radiology> Organ Volume (ml/day) ----- --------------- Salivary glands 1500 Stomach 2500 Biliary system 500 Pancreas 1500 Intestine 1000 (12 Dec 1998) |
| GI-tract target lesion | <radiology> Metastatic melanoma, primary neoplasm, spindle cell tumour (benign or malignant), lymphoma, carcinoid, carcinoma, metastasis, breast carcinoma, lung carcinoma, renal carcinoma, Kaposi's sarcoma, eosinophilic granuloma, ectopic pancreas (12 Dec 1998) |
| Giacomini | Carlo, Italian anatomist, 1841-1898. See: band of Giacomini, frenulum of Giacomini, uncus band of Giacomini. (05 Mar 2000) |
| Giannuzzi | Italian anatomist, 1839-1876. See: Giannuzzi's crescents, Giannuzzi's demilunes. (05 Mar 2000) |
| Giannuzzi's crescents | The serous cells at the distal end of a mucous, tubuloalveolar secretory unit of certain salivary glands. Synonym: Giannuzzi's crescents, Giannuzzi's demilunes, Heidenhain's crescents, Heidenhain's demilunes. (05 Mar 2000) |
| Giannuzzi's demilunes | The serous cells at the distal end of a mucous, tubuloalveolar secretory unit of certain salivary glands. Synonym: Giannuzzi's crescents, Giannuzzi's demilunes, Heidenhain's crescents, Heidenhain's demilunes. (05 Mar 2000) |
| Gianotti | F., 20th century Italian dermatologist. See: Gianotti-Crosti syndrome. (05 Mar 2000) |
| Gianotti-Crosti syndrome | <syndrome> A cutaneous manifestation of hepatitis B infection occurring in young children; an exanthem comprised of dusky papules on the legs, buttocks, and extensors of the arms; it lasts 2 to 8 weeks and is associated with adenopathy and malaise. Synonym: papular acrodermatitis of childhood. (05 Mar 2000) |
| giant | 1. A man of extraordinari bulk and stature. "Giants of mighty bone and bold emprise." 2. A person of extraordinary strength or powers, bodily or intellectual. 3. Any animal, plant, or thing, of extraordinary size or power. Giant's Causeway, a vast collection of basaltic pillars, in the county of Antrim on the northern coast of Ireland. Origin: OE. Giant, geant, geaunt, OF. Jaiant, geant, F. Geant, L. Gigas, fr. Gr, from the root of E. Gender, genesis. See Gender, and cf. Gigantic. Like a giant; extraordinary in size, strength, or power; as, giant brothers; a giant son. Giant cell. <anatomy> A very large African heron (Ardeomega goliath). It is the largest heron known. Giant kettle, a pothole of very large dimensions, as found in Norway in connection with glaciers. See Pothole. Giant powder. See Nitroglycerin. <botany> Giant puffball, one of several species of very large squids, belonging to Architeuthis and allied genera. Some are over forty feet long. Source: Websters Dictionary (01 Mar 1998) |
| giant axon | <biology> Extraordinarily large unmyelinated axons found in invertebrates. Some, like the squid giant axon, can approach 1 mm diameter. Large axons have high conduction speeds, the giant axons are invariably involved in panic or escape responses and may (e.g. Crayfish) have electrical synapses to further increase speed. Vertebrate axons with high conduction velocites are much narrower: they are myelinated, allowing saltatory conduction. (17 Dec 1997) |
| giant axonal neuropathy | <paediatrics> A rare disorder beginning at or after the third year of life, and presenting clinically with kinky hair, progressive painless clumsiness, muscle weakness and atrophy, sensory loss, and areflexia. Pathologically, both myelinated and unmyelinated nerve fibres contain axonal spheroids packed with neurofilaments; sporadic in nature. (05 Mar 2000) |
| giant cell | <pathology> A cell of large size, often with many nuclei. They are multinucleated masses produced by the fusion of many cells. They are often associated with viral infections. In AIDS, they are induced when the envelope glycoprotein of HIV binds to the CD4 antigen of uninfected neighboring T4 cells. The resulting syncytium leads to cell death and thus may account for the cytopathic effect of the virus. (18 Jul 2002) |