| rheumatoid nodule | Subcutaneous nodules seen in 20-30% of rheumatoid arthritis patients. They may arise anywhere on the body, but are most frequently found over the bony prominences. The nodules are characterised histologically by dense areas of fibrinoid necrosis with basophilic streaks and granules, surrounded by a palisade of cells, mainly fibroblasts and histiocytes. (12 Dec 1998) |
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| rheumatoid nodules | rheumatoid nodules are firm lumps in the skin of patients with rheumatoid arthritis that usually occur in pressure points of the body, most commonly the elbows (12 Dec 1998) |
| rheumatoid spondylitis | <rheumatology> A polyarthritis involving the spine, which is characterised by progressive, painful stiffening of the joints and ligaments. It almost exclusively affects young men. Interestingly the disease seems to be associated with HLA B27, those with this histocompatability antigen are 300 times more likely to get the disease, 90% of sufferers have HLA B27 (18 Nov 1997) |
| rheumatologist | A medical doctor who specialises in rheumatology. (09 Oct 1997) |
| rheumatology | <study> A branch of medicine concerned with the diagnosis and treatment of arthritis. (09 Oct 1997) |
| rheumic | <medicine> Pertaining to, or characterised by, rheum. Rheumic diathesis. See Dartrous diathesis, under Dartrous. Source: Websters Dictionary (01 Mar 1998) |
| rheumides | <medicine> The class of skin disease developed by the dartrous diathesis. See Dartrous. Origin: NL. See Rheum. Source: Websters Dictionary (01 Mar 1998) |
| rhexis | An obsolete term for bursting or rupture of an organ or vessel. Origin: G. Rhexis, rupture (05 Mar 2000) |
| rhigolene | <chemistry> A mixture of volatile hydrocarbons intermediate between gsolene and cymogene. It is obtained in the purification of crude petroleum, and is used as a refregerant. Origin: Gr. Cold + L. Oleum oil. Source: Websters Dictionary (01 Mar 1998) |
| rhigosis | The perception of cold. Origin: G. Rhigoo, to be cold, + -osis, condition (05 Mar 2000) |
| rhigotic | Pertaining to rhigosis. (05 Mar 2000) |
| rhin- | Rhino- The nose. Origin: G. Rhis (05 Mar 2000) |
| rhinal | <anatomy> Og or pertaining to the nose or olfactory organs. Origin: Gr, the nose. Source: Websters Dictionary (01 Mar 1998) |
| rhinal fissure | The shallow rostral continuation of the collateral sulcus that delimits the rostral part of the parahippocampal gyrus from the fusiform or lateral occipitotemporal gyrus. One of the oldest sulci of the pallium, it marks the border between the neocortex and the allocortical (olfactory). Synonym: sulcus rhinalis, rhinal fissure. (05 Mar 2000) |
| rhinal sulcus | The shallow rostral continuation of the collateral sulcus that delimits the rostral part of the parahippocampal gyrus from the fusiform or lateral occipitotemporal gyrus. One of the oldest sulci of the pallium, it marks the border between the neocortex and the allocortical (olfactory). Synonym: sulcus rhinalis, rhinal fissure. (05 Mar 2000) |