| cyanosis | <clinical sign> A bluish discolouration, applied especially to such discolouration of skin and mucous membranes due to excessive concentration of reduced haemoglobin in the blood. Origin: Gr. Kyanos = blue (21 May 1997) |
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| cyanosis retinae | Venous congestion of the retina. Shunt cyanosis, any blue colour of the entire skin or a region of the skin or mucous membrane due to a right to left shunt permitting unoxygenated blood to reach the left side of the circulation. (05 Mar 2000) |
| hereditary methemoglobinaemic cyanosis | Methemoglobinaemia due to formation of any one of a group of abnormal a chain or b chain haemoglobins collectively known as haemoglobin M. Slate-gray cyanosis occurs in early infancy, without pulmonary or cardiac disease, and is resistant to ascorbic acid or methylene blue therapy; autosomal dominant inheritance, methemoglobinaemia due to deficiency of cytochrome b5 reductaseor methemoglobin reductase, the enzyme responsible for reduction of intraerythrocyte methemoglobin; cyanosis is improved by ascorbic acid or methylene blue; autosomal recessive inheritance, one case of methemoglobinaemia has been reported that apparently is due to a deficiency of cytochrome b5. Synonym: hereditary methemoglobinaemia, hereditary methemoglobinaemic cyanosis, primary methemoglobinaemia. (05 Mar 2000) |
| tardive cyanosis | cyanose tardive |
| toxic cyanosis | Cyanosis due to methemoglobin formation resulting from the action of certain drugs, e.g., nitrites. (05 Mar 2000) |
| late cyanosis | cyanose tardive |
| bird cherry | <botany> A shrub (Prunus Padus) found in Northern and Central Europe. It bears small black cherries. Source: Websters Dictionary (01 Mar 1998) |
| cherry angioma | <oncology, tumour> A benign and common skin growth which is characterised by smooth, bright red growth that may be a millimetre to one quater inch across. Diagnosis is made by appearance of the lesion. More commonly seen on the trunk in individuals over 40 years of age. No treatment is necessary, although cosmetic removal via cryotherapy may be an option. (27 Sep 1997) |
| cherry juice | The juice expressed from the fresh ripe fruit of Prunus cerasus, containing not less than 1.0% of malic acid; used as a flavoring agent, and as a vehicle for cough syrups and other preparations for oral administrations. (05 Mar 2000) |
| cherry-red spot | The ophthalmoscopic appearance of the normal choroid beneath the fovea centralis, appearing as a red spot surrounded by white retinal oedema in central artery closure or lipid infiltration in sphingolipidosis. Synonym: Tay's cherry-red spot. (05 Mar 2000) |
| cherry-red spot myoclonus syndrome | <syndrome> A neuronal storage disorder in children characterised by a cherry red spot at the macula, progressive myoclonus, and easily controlled seizures; the result of sialidase deficiency. Type 1 is characterised by normal body habitus, cherry red macula, myoclonus, and normal beta-galactosidase levels; type 2 by short stature, bony abnormalities, and deficient beta-galactosidase. Synonym: sialidosis. (05 Mar 2000) |
| oil of cherry laurel | Volatile oil derived by steam distillation from Prunus laurocerasus (family Rosaceae); similar to oil of bitter almond; highly toxic due to hydrogen cyanide content. (05 Mar 2000) |
| Tay's cherry-red spot | The ophthalmoscopic appearance of the normal choroid beneath the fovea centralis, appearing as a red spot surrounded by white retinal oedema in central artery closure or lipid infiltration in sphingolipidosis. Synonym: Tay's cherry-red spot. (05 Mar 2000) |