| Stein, Stanislav von | <person> Russian otologist, *1855. See: Stein's test. (05 Mar 2000) |
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| stein-leventhal syndrome | <syndrome> Known descriptively as polycystic ovarian disease (pco), this syndrome is basically an hormonal problem that causes women to have a variety of symptoms including irregular or no periods, acne, obesity and excessive hair growth. Women with pco are at a higher risk for uterine cancer (endometrial cancer), diabetes, high blood pressure, and heart disease. With proper treatment, risks can be minimised. The syndrome is named after the late american gynecologists irving f. Stein, sr. And michael leo leventhal. (12 Dec 1998) |
| Steinberg thumb sign | <clinical sign> In Marfan's syndrome, when the thumb is held across the palm of the same hand, it projects well beyond the ulnar surface of the hand. (05 Mar 2000) |
| Steinberg, I | <person> See: Steinberg thumb sign. (05 Mar 2000) |
| steinbock | <zoology> The European ibex. A small South African antelope (Nanotragus tragulus) which frequents dry, rocky districts. Synonym: steenbok. Alternative forms: steinboc, and steinbok; also called stonebock, and stonebuck. Origin: G. Stein stone + bock buck, D. Bok. Cf. Steenbok. Source: Websters Dictionary (01 Mar 1998) |
| Steinbrinck, W | <person> 20th century Germany physician. See: Chediak-Steinbrinck-Higashi anomaly, Chediak-Steinbrinck-Higashi syndrome. (05 Mar 2000) |
| Steinert's disease | <neurology> An inherited human neuromuscular disease classed as an autosomal dominant disease in which there is progressive muscle weakening and wasting. A triplet repeat syndromes (like fragile X syndrome), this most common adult form of muscular dystrophy is caused by expansion of the unstable trinucleotide repeat CTG in the 3' untranslated region on chromosome 19q13 (cAMP-dependent muscle protein kinase gene). Anticipation has been associated with further expansion of the repeat upon transmission to subsequent generations (the inheritance pattern is autosomal dominant), although contraction has been noted to occur as well. Especially severe neonatal cases have been born to affected mothers preferentially, suggesting a role for genomic imprinting as well. The classic physical signs include atrophy of facial muscles, cataracts, and delayed muscle relaxation. Detection of the expanded trinucleotide repeat is accomplished by PCR or Southern blot and expansion appears to correlate with decreased transcription of the protein kinase gene. Inheritance: autosomal dominant. (29 Dec 1997) |
| Steinert, Hans | <person> German physician, *1875. See: Steinert's disease. (05 Mar 2000) |
| Steinmann pin | A pin that is used to transfix bone for traction or fixation. (05 Mar 2000) |
| Steinmann, Fritz | <person> Swiss surgeon, 1872-1932. See: Steinmann pin. (05 Mar 2000) |
| STEL | <abbreviation> Short-term exposure limit. (05 Mar 2000) |
| stell | 1. A prop; a support, as for the feet in standing or cilmbing. 2. A partial inclosure made by a wall or trees, to serve as a shelter for sheep or cattle. See: Stell. Source: Websters Dictionary (01 Mar 1998) |
| stella | A star or star-shaped figure. Origin: Mod. L. (05 Mar 2000) |
| stella lentis hyaloidea | The posterior pole of the lens. See: radii lentis. (05 Mar 2000) |
| stella lentis iridica | The anterior pole of the lens. See: radii lentis. (05 Mar 2000) |