| PCD | pacer-cardioverter-defibrillator; papillary collecting duct; paraneoplastic cerebellar degeneration;... |
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| PRD | partial reaction of degeneration; physician relations department; postradiation dysplasia |
| RDS | Raskin Depression Scale; respiratory distress syndrome; reticuloendothelial depressing substance; rh... |
| RED | radiation experience data; rapid erythrocyte degeneration |
| SACD | subacute combined degeneration |
| olivopontocerebellar degeneration | <neurology> An inherited disease especially. Of mid to late life that is characterised by ataxia, hypotonia, dysarthria, and degeneration of the cerebellar cortex, middle cerebellar peduncles, and inferior olives. (09 Oct 1997) |
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| orthograde 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) |
| tapetoretinal degeneration | A hereditary disorder of the retina mainly affecting photoreceptors and retinal pigment epithelium; a miscellaneous category including Friedreich's ataxia, Refsum's disease, and abetalipoproteinaemia. Synonym: primary pigmentary degeneration of retina. (05 Mar 2000) |
| Terrien's marginal degeneration | A form of marginal corneal degeneration. (05 Mar 2000) |
| ectatic marginal degeneration of cornea | Bilateral opacification and vascularization of the periphery of the cornea, progressing to formation of a gutter and ectasia. Synonym: ectatic marginal degeneration of cornea. (05 Mar 2000) |
| elastoid degeneration | 1. Degenerative change in elastic tissue. 2. Degeneration of collagen fibres, with altered staining properties resembling elastic tissue, or formation by fibroblast-activated ultraviolet or mast cell mediators of abnormal fibres. Synonym: elastoid degeneration, elastotic degeneration. (05 Mar 2000) |
| elastotic degeneration | 1. Degenerative change in elastic tissue. 2. Degeneration of collagen fibres, with altered staining properties resembling elastic tissue, or formation by fibroblast-activated ultraviolet or mast cell mediators of abnormal fibres. Synonym: elastoid degeneration, elastotic degeneration. (05 Mar 2000) |
| transsynaptic degeneration | An atrophy of nerve cells following damage to the axons that make synaptic connection with them; noted especially in the lateral geniculate body. Synonym: transneuronal atrophy, transsynaptic chromatolysis. (05 Mar 2000) |
| Turck's degeneration | Degeneration of a nerve fibre and its sheath distal to the point of injury or section of the axon; usually applied to degeneration within the central nervous system. (05 Mar 2000) |
| familial pseudoinflammatory macular degeneration | Macular degeneration that occurs during the fifth decade of life, with sudden development of a central scotoma in one eye followed rapidly by a similar lesion in the opposite eye; autosomal dominant inheritance. Synonym: Sorsby's macular degeneration. (05 Mar 2000) |
| fascicular degeneration | Muscular degeneration due to loss of motor neurons in the spinal cord or brainstem. (05 Mar 2000) |
| Zenker's degeneration | A form of severe hyaline degeneration or necrosis in skeletal muscle, occurring in severe infections. Synonym: waxy degeneration, Zenker's necrosis. (05 Mar 2000) |
| fatty degeneration | Abnormal formation of microscopically visible droplets of fat in the cytoplasm of cells, as a result of injury. Synonym: adipose degeneration, steatosis. (05 Mar 2000) |
| Kuhnt-Junius degeneration | An obsolete eponym for disciform degeneration. Synonym: Kuhnt-Junius disease. (05 Mar 2000) |
| fibrinous degeneration | A process resulting in poorly defined, deeply acidophilic, homogeneous refractile deposits with some staining reactions that resemble fibrin, occurring in connective tissue, blood vessel walls, and other sites. (05 Mar 2000) |