| psammomatous | Possessing or characterised by the presence of psammoma bodies; refers usually to certain types of meningioma or to meningeal hyperplasia with psammoma bodies. (05 Mar 2000) |
|---|---|
| psammomatous meningioma | <tumour> A firm cellular neoplasm derived from fibrous tissue of the meninges, choroid plexus, and certain other structures associated with the brain, characterised by the formation of multiple, discrete, concentrically laminated, calcareous bodies (psammoma bodies); most of these neoplasms are histologically benign, but may lead to severe symptoms as a result of compressing the brain. Synonym: angiolithic sarcoma, sand tumour, Virchow's psammoma. (05 Mar 2000) |
| psammous | Sandy. Origin: G. Psammos, sand (05 Mar 2000) |
| psarolite | <paleontology> A silicified stem of tree fern, found in abundance in the Triassic sandstone. Origin: Gr. Speckled. Source: Websters Dictionary (01 Mar 1998) |
| Psaume | J., 20th century French physician. See: Papillon-Leage and Psaume syndrome. (05 Mar 2000) |
| PSD | See Prevention of significant deterioration. (05 Dec 1998) |
| pselaphesis | Pselaphesia The higher tactile sense, including the muscle sense. Origin: G. Pselaphesis, a touching (05 Mar 2000) |
| psellism | Synonym: stammering. Origin: G. Psellismos, a stammering (05 Mar 2000) |
| pseudacromegaly | Enlargement of the extremities and face, not caused by acromegaly. (05 Mar 2000) |
| pseudaesthesia | <physiology> False or imaginary feeling or sense perception such as occurs in hypochondriasis, or such as is referred to an organ that has been removed, as an amputated foot. Origin: NL. See Pseudo-, and aesthesia. Source: Websters Dictionary (01 Mar 1998) |
| pseudagraphia | Partial agraphia in which one can do no original writing, but can copy correctly. Synonym: pseudoagraphia. Origin: pseud-+ G. A-priv. + grapho, to write (05 Mar 2000) |
| pseudalbuminuria | Albuminuria which is not associated with renal disease. Synonym: pseudoalbuminuria. (05 Mar 2000) |
| pseudallescheria | Ascomycetous fungi, family microascaceae, order microascales, commonly found in the soil. They are causative agents of mycetoma, maduromycosis, and other infections in humans. (12 Dec 1998) |
| Pseudallescheria boydii | A species of fungus that causes eumycotic mycetoma and pseuallescheriasis; its conidial (asexual) state is Scedosporium apiospermum. Synonym: Allescheria boydii. (05 Mar 2000) |
| pseudallescheriasis | A variety of clinical diseases resulting from infection with Pseudallescheria boydii; e.g., pulmonary colonization, fungoma, and invasive pneumonitis, as well as mycotic keratitis, endophthalmitis, endocarditis, meningitis, sinusitis, brain abscesses, cutaneous and subcutaneous infections, and disseminated systemic infections. (05 Mar 2000) |