| orbital surface | The surface of a bone which contributes to the walls of the orbit. The NA recognises an orbital surface on the following bones: greater wing of the sphenoid bone; the maxilla; the frontal bone; the zygomatic bone. Synonym: facies orbitalis. (05 Mar 2000) |
|---|---|
| orbital syndrome | <syndrome> An obsolete term referring to neoplastic tissue formation involving the apex of the orbit, causing ophthalmoplegia and optic nerve atrophy. (05 Mar 2000) |
| orbital tubercle of zygomatic bone | A small elevation on the orbital surface of the zygomatic bone, just within the orbital margin, about 1 cm below the zygomaticofrontal suture; it gives attachment to the lateral check ligament, the lateral palpebral ligament, and the suspensory ligament of the eyeball. Synonym: eminentia orbitalis ossis zygomatici, orbital eminence of zygomatic bone, Whitnall's tubercle. (05 Mar 2000) |
| orbital width | The distance between the dacryon and the farthest point on the anterior edge of the outer border of the orbit (Broca), or between the latter point and the junction of the frontolacrimal suture and the posterior edge of the lacrimal groove. (05 Mar 2000) |
| tarso-orbital | Relating to the eyelids and the orbit. (05 Mar 2000) |
| zygomatico-orbital | Relating to the zygomatic bone and the orbit. (05 Mar 2000) |
| zygomatico-orbital artery | <anatomy, artery> Origin, superficial temporal, sometimes middle temporal; distribution, orbicularis oculi muscle and portions of the orbit; anastomoses, lacrimal and palpebral branches of ophthalmic. Synonym: arteria zygomatico-orbitalis. (05 Mar 2000) |
| zygomatico-orbital foramen | The common opening on the orbital surface of the zygomatic bone of the canals transmitting the zygomaticofacial and zygomaticotemporal nerves; sometimes each of these canals has a separate opening on the orbital surface. Synonym: foramen zygomatico-orbitale. (05 Mar 2000) |
| fronto-orbital area | The cerebral cortex covering the basal surface of the frontal lobes. Synonym: fronto-orbital area. (05 Mar 2000) |
| abdominal abscess | <surgery> A localised pus-forming (suppurative) bacterial infection that occurs within the abdominal cavity as the result of a perforated viscus or post operative complication. Treatment requires either percutaneous or open surgical drainage. (27 Sep 1997) |
| abscess | <microbiology, surgery> A localised collection of pus caused by suppuration buried in tissues, organs or confined spaces. Usually due to an infective process. Origin: L. Abscessus, from ab = away, cedere = to go (18 Nov 1997) |
| abscess, peritonsillar | A persistent collection of pus behind the tonsil. (12 Dec 1998) |
| abscess scan | <investigation> This is a nuclear scan that utilises radioactively tagged white blood cells. The patients white blood cells (taken from a small tube of blood) are tagged with radioactive indium. Later, the cells are then reinjected into the bloodstream. The coarse of the white blood cells can then be mapped using a gamma camera (radiation detecting device). The net result is a picture that shows the location of the radioactive white blood cells. The location of the white cells can indicated the presence of infection or inflammation. This test is useful in detecting a hidden source of bacterial infection, such as an abscess. (11 Mar 1998) |
| abscess, skin | Medical term for a common boil. (12 Dec 1998) |
| acute abscess | A recently formed abscess with little or no fibrosis in the wall of the cavity. Synonym: hot abscess. (05 Mar 2000) |