| 'Greek letter alpha' | angular acceleration; first [carbon atom next to the carbon atom bearing the active group in organic... |
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| APCKD | adult-type polycystic kidney disease |
| ATCC | American Type Culture Collection |
| ATD | Alzheimer-type dementia; androstatrienedione; anthropomorphic test dummy; antithyroid drug; aqueous ... |
| beta [Greek letter beta] | an anomer of a carbohydrate; buffer capacity; carbon separated from a carboxyl by one other carbon i... |
| Arnold-Chiari syndrome | <radiology> Chiari I herniation of medulla and cerebellar tonsils, 4th ventricle in normal position, Chiari II herniation of medulla, tonsils, vermis, 4th ventricle at foramen magnum, myelomeningocele, aqueductal stenosis most likely to be hydrocephalus, Chiari III further herniation, 4th ventricle below foramen magnum, encephalocele or myelomeningocele associated with: agenesis of corpus callosum, syrinx (12 Dec 1998) |
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| arterial thoracic outlet syndrome | <syndrome> A rare disorder due to compression of the subclavian artery (with resultant poststenotic dilation) by a fully formed cervical rib; thrombi form in the dilated distal arterial segment, and distal limb ischemia may occur due to thromboembolic events. (05 Mar 2000) |
| arteriovenous strabismus syndrome | <syndrome> Strabismus in which the angle of deviation is more marked on looking upward or downward. See: A-esotropia, V-esotropia, A-exotropia, V-exotropia. (05 Mar 2000) |
| Ascher's syndrome | <syndrome> A condition in which a congenital double lip is associated with blepharochalasis and nontoxic thyroid gland enlargement. (05 Mar 2000) |
| Asherman's syndrome | <syndrome> Synechiae within the endometrial cavity, often causing amenorrhoea and infertility. (05 Mar 2000) |
| asplenia syndrome | <syndrome> Syndrome seen in patients who had no functional spleen, either due to surgical removal of disease (e.g., sickle cell anaemia); includes increased susceptibility to bacterial infection, especially pneumococcal infection. (05 Mar 2000) |
| ataxia telangiectasia syndrome | ataxia telangiectasia |
| auriculotemporal nerve syndrome | <syndrome> Localised flushing and sweating of the ear and cheek in response to eating. Synonym: Frey's syndrome, gustatory sweating syndrome. (05 Mar 2000) |
| autoerythrocyte sensitization syndrome | <syndrome> A condition, usually occurring in women, in which the individual bruises easily (purpura simplex) and the ecchymoses tend to enlarge and involve adjacent tissues, resulting in pain in the affected parts; so-called because similar lesions are produced by inoculation of the individual's blood or various components of red blood cells and it is thought to be a form of localised autosensitization, although no specific antibodies have been demonstrable; in some individuals, there seems to be a psychogenic mechanism. Synonym: Gardner-Diamond syndrome, psychogenic purpura. (05 Mar 2000) |
| Avellis' syndrome | <syndrome> Unilateral paralysis of the larynx and velum palati, with contralateral loss of pain and temperature sensibility in the parts below. Synonym: jugular foramen syndrome. (05 Mar 2000) |
| A-V strabismus syndrome | <syndrome> Strabismus in which the angle of deviation is more marked on looking upward or downward. See: A-esotropia, V-esotropia, A-exotropia, V-exotropia. (05 Mar 2000) |
| Ayerza's syndrome | <syndrome> Sclerosis of the pulmonary arteries in chronic cor pulmonale; associated with severe cyanosis, it is a condition resembling polycythemia vera but resulting from primary pulmonary arteriosclerosis or primary pulmonary hypertension and characterised by plexiform lesions of arterioles. Synonym: Ayerza's disease, cardiopathia nigra, plexogenic pulmonary arteriopathy. (05 Mar 2000) |
| Babinski's syndrome | <syndrome> The combination of cardiac, arterial, and central nervous system manifestations of late syphilis. (05 Mar 2000) |
| baby bottle syndrome | Rampant caries of the primary dentition associated with the habitual use, after age 1, of a baby bottle as an aid for sleeping. Synonym: baby bottle syndrome. (05 Mar 2000) |
| baby, foetal alcohol syndrome | <syndrome> Alcohol is capable of causing birth defects. FAS (foetal alcohol syndrome) always involves brain damage. And impaired growth. FAS also always involves head and face abnormalities. No amount of alcohol has been proven safe during pregnancy. Women who are or may become pregnant are advised to avoid alcohol. (12 Dec 1998) |