| SSP | Sanarelli-Shwartzman phenomenon; subacute sclerosing panencephalitis; slice sensitivity profile; sub... |
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| TRAP | carpal tunnel syndrome, Raynaud phenomenon, aching muscles, proximal muscle weakness [rheumatic diso... |
| CHESS | chemical shift selective |
| CSA | Canadian Standards Association; canavaninosuccinic acid; carbonyl salicylamide; cell surface antigen... |
| CSI | calculus surface index; cancer serum index; cavernous sinus infiltration; cervical spine injury; che... |
| Ashman's phenomenon | Aberrant ventricular conduction of a beat ending a short cycle that is preceded by a longer cycle most commonly during atrial fibrillation. (05 Mar 2000) |
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| Aubert's phenomenon | A phenomenon in which a bright perpendicular line appears to incline to one side when the observer turns the head to the opposite side in a dark room. (05 Mar 2000) |
| Austin Flint phenomenon | The murmur of relative mitral stenosis during significant aortic regurgitation owing to narrowing of the mitral orifice by pressure of the aortic regurgitant flow on the anterior mitral leaflet. Synonym: Austin Flint murmur. (05 Mar 2000) |
| autoscopic phenomenon | The encountering of an image of oneself, the image being an illusion, a hallucination, or a vivid fantasy. (05 Mar 2000) |
| Babinski's phenomenon | <clinical sign> Extension of the great toe and abduction of the other toes instead of the normal flexion reflex to plantar stimulation, considered indicative of pyramidal tract involvement ("positive" Babinski). Synonym: Babinski reflex, Babinski's phenomenon, great-toe reflex, paradoxical extensor reflex, toe phenomenon. (05 Mar 2000) |
| Bell's phenomenon | A patient with peripheral facial paralysis cannot close the eyelids of the affected side without at the same time moving the eyeball upward and outward. (05 Mar 2000) |
| Bombay phenomenon | A rare recessive trait at a locus that ordinarily manufactures H substance, the precursor from which the A and B phenotypes are elaborated; the mutant causes failure to produce H substance and no matter what the genotype at the ABO locus, the phenotype is O. The Bombay phenomenon is epistatic to the ABO locus. Origin: Bombay, India, where first reported (05 Mar 2000) |
| Bordet-Gengou phenomenon | The phenomenon of complement fixation; when alexin (complement)-containing serum is added to a mixture of bacteria and specific antibody, the alexin is removed (fixed) and is not available to lyse subsequently added erythrocytes sensitised with specific antibody. See: Gengou phenomenon. (05 Mar 2000) |
| breakaway phenomenon | The occurrence, during high-altitude flight, of a sensation of being totally detached from the earth and from other people. (05 Mar 2000) |
| Brucke-Bartley phenomenon | The sensation of glare in response to successive stimuli at frequencies just below the fusion point. (05 Mar 2000) |
| Capgras' phenomenon | <syndrome> The delusional belief that a person (or persons) close to the schizophrenic patient has been substituted for by one or more impostors; may have an organic aetiology. Synonym: Capgras' phenomenon, illusion of doubles. (05 Mar 2000) |
| vacuum disk phenomenon | The appearance of a radiolucent stripe in an intervertebral disk, a manifestation of disk degeneration; a misnomer since there is gas present. (05 Mar 2000) |
| radial phenomenon | Dorsal flexion of the hand occurring involuntarily with palmar flexion of the fingers. (05 Mar 2000) |
| Galassi's pupillary phenomenon | A constriction of both pupils when an effort is made to close eyelids forcibly held apart. A variant of the pupil response to near vision. Synonym: Galassi's pupillary phenomenon, Gifford's reflex, lid-closure reaction, orbicularis phenomenon, orbicularis pupillary reflex, Piltz sign, Westphal's pupillary reflex, Westphal-Piltz phenomenon. (05 Mar 2000) |
| Gallavardin's phenomenon | Dissociation between the noisy and musical elements of the murmur of aortic stenosis, the musical element being better heard at the left sternal border and at the cardiac apex while the noisy element is better heard at the aortic area. (05 Mar 2000) |