| RFC | request for comments; retrograde femoral catheter; rosette-forming cell |
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| RGP | retrograde pyelography |
| RP | radial pulse; radiopharmaceutical; rapid processing [of film]; Raynaud phenomenon; reactive protein;... |
| RPG | radiation protection guide; Report Program Generator[ PC language]; retrograde pyelogram; rheoplethy... |
| RU | radioulnar; rat unit; reading unit; residual urine; resin uptake; resistance unit; retrograde urogra... |
| reticular degeneration | <ophthalmology> Severe epidermal oedema resulting in multilocular bullae. (05 Mar 2000) |
|---|---|
| retinal degeneration | <ophthalmology> A retrogressive pathological change in the retina, focal or generalised, caused by genetic defects, inflammation, trauma, vascular disease, or aging. Degeneration affecting predominantly the macula lutea of the retina is macular degeneration. (03 Jul 1999) |
| granular degeneration | Swelling of cells due to injury to the membranes affecting ionic transfer; causes an accumulation of intracellular water. Synonym: albuminous swelling, granular degeneration, hydropic degeneration, parenchymatous degeneration. (05 Mar 2000) |
| granulovacuolar degeneration | Degeneration of hippocampal brain cells in elderly persons, characterised by basophilic granules surrounded by a clear zone in hippocampal neurons; occurs more frequently in Alzheimer's disease. (05 Mar 2000) |
| gray degeneration | Degeneration of the white substance of the spinal cord, the fibres of which lose their myelin sheaths and become darker in colour. (05 Mar 2000) |
| wallerian degeneration | <medicine> A form of degeneration occurring in nerve fibres as a result of their division; so called from Dr. Waller, who published an account of it in 1850. Source: Websters Dictionary (01 Mar 1998) |
| Monckeberg's degeneration | Arterial sclerosis involving the peripheral arteries, especially of the legs of older people, with deposition of calcium in the medial coat (pipestem arteries) but with little or no encroachment on the lumen. Synonym: medial arteriosclerosis, Monckeberg's calcification, Monckeberg's degeneration, Monckeberg's medial calcification, Monckeberg's sclerosis. (05 Mar 2000) |
| waxy degeneration | Infiltration of amyloid between cells and fibres of tissues and organs. Synonym: waxy degeneration. (05 Mar 2000) |
| colliquative degeneration | An obsolete term for liquefaction degeneration. (05 Mar 2000) |
| colloid degeneration | A degeneration similar to mucoid degeneration, in which the material is inspissated. (05 Mar 2000) |
| mucinoid degeneration | A term including both mucoid and colloid degeneration, the essential cellular changes in both being similar, the only difference being that, in colloid degeneration, the substance is firmer and more inspissated than in mucoid degeneration, in which it is thin and jelly-like. (05 Mar 2000) |
| mucoid degeneration | A conversion of any of the connective tissues into a gelatinous or mucoid substance. Synonym: myxoid degeneration, myxomatous degeneration, myxomatosis. (05 Mar 2000) |
| mucoid medial degeneration | Loss of elastic and muscle fibres in the aortic media, with accumulation of mucopolysaccharide, sometimes in cystlike spaces between the fibres; a disease of unknown cause, which may be inherited and which predisposes to dissecting aneurysms. Synonym: Erdheim disease, medionecrosis aortae idiopathica cystica, medionecrosis of the aorta, mucoid medial degeneration. (05 Mar 2000) |
| cone degeneration | A retinal abnormality in which colour perception is severely deficient and typical changes occur in electroretinogram. See: achromatopsia. Synonym: cone degeneration. (05 Mar 2000) |
| myelinic degeneration | Formation of myelin figures in the cytoplasm of cells, possibly by degradation or hydration of lipoprotein of self-digested organelles. (05 Mar 2000) |