| cross-reactive antibody | <haematology, immunology> Antibodies which don't respond to any one specific antigen, but will respond to a number of them. These antibodies can be responsible for false positive results in antigen-antibody tests. (09 Oct 1997) |
|---|---|
| thiobarbituric acid reactive substances | Low-molecular-weight end products, probably malondialdehyde, that are formed during the decomposition of lipid peroxidation products. These compounds react with thiobarbituric acid to form a fluorescent red adduct. (12 Dec 1998) |
| African endomyocardial fibrosis | Fibrosis of the inner layers of the myocardium, often including the endocardium, causing diastolic restriction of the heart; indigenous to East Africa. (05 Mar 2000) |
| radiation fibrosis | The formation of scar tissue as a result of radiation therapy to the lung. (12 Dec 1998) |
| mediastinal fibrosis | <radiology> Histoplasmosis most common cause, can cause superior vena cava obstruction (12 Dec 1998) |
| replacement fibrosis | The formation of fibrous tissue that occupies sites where various other cells and tissues have become atrophied, or degenerated and necrotic. (05 Mar 2000) |
| retroperitoneal fibrosis | <radiology> Ureters tapered or obstructed, most severe at L4-5, ureters deviated medially, Treatment: symptomatic; steroids have ? long-term benefit Differential diagnosis: malignancy, lymphoma (especially Hodgkin's), metastasis from colon and breast, retroperitoneal sarcoma, drugs, methysergide (Sansert), haemorrhage, aortic aneurysm, trauma or surgery, inflammation, Crohn's disease, diverticulitis, pancreatitis, extravasated urine, radiation (12 Dec 1998) |
| pericentral fibrosis | Fibrosis occurring around the central veins in the hepatic lobules. (05 Mar 2000) |
| perimuscular fibrosis | Fibrosis in the outer media of arteries, usually the renal arteries of young women, where it causes segmental stenosis and hypertension; a variety of fibromuscular dysplasia. Synonym: subadventitial fibrosis. (05 Mar 2000) |
| pipestem fibrosis | A characteristic pipe-shaped fibrosis formed around hepatic portal veins in some cases of long-continued heavy infection with Schistosoma mansoni; thought to be induced by the presence of large numbers of schistosome eggs in the hepatic tissues. Synonym: Symmers' clay pipestem fibrosis, Symmers' fibrosis. (05 Mar 2000) |
| congenital fibrosis of the extraocular muscles | An autosomal dominant disorder associated with blepharoptosis and absence of eye movements. (05 Mar 2000) |
| cystic fibrosis | <chest medicine> A generalised disorder of infants, children and young adults, in which there is widespread dysfunction of the exocrine glands, characterised by signs of chronic pulmonary disease (due to excess mucus production in the respiratory tract), pancreatic deficiency, abnormally high levels of electrolytes in the sweat and occasionally by biliary cirrhosis. There is an ineffective immunologic defense against bacteria in the lungs. Pathologically, the pancreas shows obstruction of the pancreatic ducts by amorphous eosinophilic concretions, with consequent deficiency of pancreatic enzymes, resulting in steatorrhoea and azotorrhoea and intestinal malabsorption. The degree of involvement of organs and glandular systems may vary greatly, with consequent variations in the clinical picture. Inheritance: autosomal recessive. (13 Nov 1997) |
| cystic fibrosis antigen | Now known to be MRP 8. See: calgranulins. (18 Nov 1997) |
| cystic fibrosis transmembrane conductance regulator | Gene believed to be defective in cystic fibrosis. Gene encodes a chloride channel, homologous to a family of proteins that actively transport small solutes in an ATP dependent manner (ABC transporters). The regulator protein is a protein which is embedded in the cell membrane and acts as a channel for certain ions to be transported into or out of the cell. The disease cystic fibrosis is caused by a defect in the gene for this protein. (09 Oct 1997) |
| progressive massive fibrosis | <radiology> Progressive massive fibrosis, silicosis (properly conglomerate nodules, not progressive massive fibrosis), coal worker's pneumoconiosis, density (conglomerate mass) in upper lobe, retracts toward hilum, leaves emphysematous change (bullae) at lung periphery (12 Dec 1998) |