| simple lymphangiectasis | A circumscribed region or focus of several to numerous lymphatic vessels that are moderately dilated. Synonym: simple lymphangiectasis. (05 Mar 2000) |
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| cavernous lymphangiectasis | A condition of conspicuous dilation of lymphatic vessels in a fairly circumscribed region, frequently with the formation of cavities or "lakes" filled with lymph. Synonym: cavernous lymphangiectasis. (05 Mar 2000) |
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| cystic lymphangiectasis | A condition characterised by a fairly well circumscribed group of several or numerous, cystlike, dilated vessels or spaces lined with endothelium and filled with lymph. Synonym: cystic lymphangiectasis. (05 Mar 2000) |
| intestinal lymphangiectasis | Familial lymphangiectasis with intestinal loss of lymph causing lymphocytopenia and hypogammaglobulinaemia. (05 Mar 2000) |
| lymphangiectasis | Dilatation of the lymphatic vessels. (12 Dec 1998) |
| lymphangiectasis, intestinal | Dilatation of the intestinal lymphatic system, particularly in the lacteals in the intestinal villi, characterised by protein-losing enteropathy, steatorrhoea, and lymphopenia. It may be congenital, due to abnormality of the lymphatic system (as in milroy's disease) or acquired, due to involvement of the major intestinal lymphatic ducts by inflammatory processes or neoplasm, or to increased lymphatic pressure, as in valvular heart disease and constrictive pericarditis. (12 Dec 1998) |
| mastectomy, simple | Removal of only the breast tissue and nipple and a small portion of the overlying skin. (12 Dec 1998) |
| microscope, simple | <microscopy> A microscope that has a single converging lens (or a combination of lenses that function optically as a single converging lens). Anton van leeuwenhoek (1632-1723) made good use of the simple microscope to look at the life within a drop of water, and such. The magnifying properties of lenses had been well known in ancient times (for example to the greeks and romans) but it was not until about 1600 that it became possible to make small lenses with the precision needed to make a microscope. (12 Dec 1998) |
| simple | Undivided, of a leaf, not divided into leaflets, of a hair or an inflorescence, not branched. (09 Oct 1997) |
| simple absence | A brief clouding of consciousness accompanied by the abrupt onset of 3/sec spikes and waves on EEG. Synonym: pure absence. (05 Mar 2000) |
| simple anchorage | Anchorage in which the resistance to the movement of one or more teeth comes solely from resistance to tipping movement of the anchorage unit. (05 Mar 2000) |
| simple anisocoria | A common (20% of normals) benign inequality of the pupils that may change from one hour to the next. Synonym: essential anisocoria, physiologic anisocoria, simple-central anisocoria. (05 Mar 2000) |
| simple beam | In dentistry, a straight beam that has only two supports, one at either end. (05 Mar 2000) |
| simple bone cyst | <radiology> Unicameral or solitary bone cyst, lytic, unilocular, central, meta-diaphyseal, humerus (most common site), age 0 - 10 yrs Differential diagnosis: bubbly bone lesions (12 Dec 1998) |
| simple-central anisocoria | A common (20% of normals) benign inequality of the pupils that may change from one hour to the next. Synonym: essential anisocoria, physiologic anisocoria, simple-central anisocoria. (05 Mar 2000) |
| simple closure | A single layer closure. (27 Sep 1997) |