| circumscribed | Limited in space, well localised. (27 Sep 1997) |
|---|---|
| circumscribed breast lesions | <radiology> Lucent, lipoma, oil cyst (following haematoma or biopsy), galactocele (associated with lactation), mixed density, fibro-adeno-lipoma, galactocele, intramammary lymph node, haematoma (12 Dec 1998) |
| circumscribed craniomalacia | A disease marked by the presence of areas of thinning and softening in the bones of the skull and widening of the sutures and fontanelles. Usually of syphilitic or rachitic origin. Synonym: circumscribed craniomalacia. Origin: cranio-+ L. Tabes, a wasting (05 Mar 2000) |
| circumscribed peritonitis | Peritonitis confined to a demarcated region of the peritoneal cavity. Synonym: circumscribed peritonitis. (05 Mar 2000) |
| circumscribed pyocephalus | Abscess of the brain. (05 Mar 2000) |
| circumscriptus | Synonym: circumscribed. Origin: L. (05 Mar 2000) |
| circumstantiality | A disturbance in the thought process, either voluntary or involuntary, in which one gives an excessive amount of detail (circumstances) that is often tangential, elaborate, and irrelevant, to avoid making a direct statement or answer to a question; observed in schizophrenia and in obsessional disorders. Compare: tangentiality. Origin: L. Circum-sto, pr. P. -stans, to stand around (05 Mar 2000) |
| circumvallate | Denoting a structure surrounded by a wall, as the circumvallate (vallate) papillae of the tongue. Origin: circum-+ L. Vallum, wall (05 Mar 2000) |
| circumvallate papilla | One of eight or ten projections from the dorsum of the tongue forming a row anterior to and parallel with the sulcus terminalis; each papilla is surrounded by a circular trench (fossa) having a slightly raised outer wall (vallum); on the sides of the vallate papilla and the opposed margin of the vallum are numerous taste buds. Synonym: papilla vallata, circumvallate papilla. Vascular papillae, dermal papillae containing vascular loops. (05 Mar 2000) |
| circumvascular | Synonym: perivascular. Origin: circum-+ L. Vasculum, vessel (05 Mar 2000) |
| circumventricular | Around or in the area of a ventricle, as are the circumventricular organs. (05 Mar 2000) |
| circumventricular organs | Four small areas in or near the base of the brain that have fenestrated capillaries and are outside the blood-brain barrier. They are neurohypophysis, area postrema, organum vasculosum of the lamina terminalis and subfornical organ (SFO). The neurohypophysis is a neurohemal organ. The other three are chemoreceptors: area postrema triggers vomiting in response to chemical changes in plasma, organum vasculosum of the lamina terminalis senses osmolality and alters vasopressin secretion and SFO initiates drinking in response to angiotensin II. (05 Mar 2000) |
| circumvolute | Twisted around; rolled about. Origin: L. Circum-volvo, pp. -volutus, to roll around (05 Mar 2000) |
| circumzygomatic fixation | Stabilization of a fracture segment or surgical splint by wire passed around the zygomatic arch. (05 Mar 2000) |
| circus movement | A contraction or excitation wave traveling continuously in circular fashion around a ring of muscle or through the wall of the heart. Synonym: circus rhythm. (05 Mar 2000) |