| OAP | Office of Adolescent Pregnancy; old age pension, old age pensioner; ophthalmic artery pressure; oste... |
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| OAPP | Office of Adolescent Pregnancy Programs |
| PA | panic attack; pantothenic acid; paralysis agitans; paranoia; passive aggressive; pathology; patient'... |
| PAG | periaqueductal gray [matter]; polyacrylamide gel; pregnancy-associated globulin; proliferation-assoc... |
| PAM | pancreatic acinar mass; penicillin aluminum monostearate; peptidylglycine alpha-amidating monooxygen... |
| Bouchard's disease | Myopathic dilation of the stomach. (05 Mar 2000) |
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| Bouillaud's disease | An obsolete eponym for acute rheumatic fever with carditis. (05 Mar 2000) |
| Bourneville-Pringle disease | Facial lesions with tuberous sclerosis, first reported as adenoma sebaceum, but now recognised as angiofibromas. (05 Mar 2000) |
| Bourneville's disease | <radiology> (Bourneville disease) autosomal dominant phakomatosis classic triad: seizures, retardation, adenoma sebaceum, calcified subependymal hamartomas, uncalcified tubers in cerebral cortex, enhancing lesion most likely to be malignant transformation to giant cell astrocytoma associated with: skin lesions, angiomyolipoma, increased risk of renal cell carcinoma (12 Dec 1998) |
| bovine virus diarrhoea-mucosal disease | Acute disease of cattle caused by the bovine viral diarrhoea virus (diarrhoea virus, bovine viral). Often mouth ulcerations are the only sign but fever, diarrhoea, drop in milk yield, and loss of appetite are also seen. Mortality is high in animals showing clinical signs, especially diarrhoea. (12 Dec 1998) |
| bowen's disease | A persistent progressive non-elevated red scaly or crusted plaque which is due to an intradermal carcinoma and is potentially malignant. Atypical squamous cells proliferate through the whole thickness of the epidermis. The lesions may occur anywhere on the skin surface or on mucosal surfaces. The cause most frequently found is trivalent arsenic compounds. Freezing, cauterization or diathermy coagulation is often effective. (12 Dec 1998) |
| Brailsford-Morquio disease | <syndrome> An error of mucopolysaccharide metabolism with excretion of keratan sulfate in urine; characterised by severe skeletal defects with short stature, severe deformity of spine and thorax, long bones with irregular epiphyses but with shafts of normal length, enlarged joints, flaccid ligaments, and waddling gait; autosomal recessive inheritance; type IV A mucopolysaccharidosis is due to an absence of galactose-1-sulfatase, while type IV B is due to a deficiency of a beta-galactosidase. Synonym: Brailsford-Morquio disease, Morquio's disease, Morquio-Ullrich disease, type IVA, B mucopolysaccharidosis. (05 Mar 2000) |
| brancher glycogen storage disease | Type of glycogen storage disease, due to deficiency of amylo-1,4-1,6-transglucosidase (brancher enzyme). Synonym: brancher deficiency glycogenosis, debrancher deficiency. (05 Mar 2000) |
| Breda's disease | A type of American leishmaniasis caused by Leishmania braziliensis that affects the mucous membranes, particularly in the nasal and oral region, resulting in grossly destructive changes; particularly common in Brazil where a significant proportion of persons infected with L. Braziliensis develop this condition; may develop metastatically from sores originally found elsewhere on the body. Synonym: Breda's disease, bubas braziliana. Origin: Sp., fr. L. Spongia, sponge (05 Mar 2000) |
| bright's disease | <medicine> An affection of the kidneys, usually inflammatory in character, and distinguished by the occurrence of albumin and renal casts in the urine. Several varieties of Bright's disease are now recognised, differing in the part of the kidney involved, and in the intensity and course of the morbid process. Origin: From Dr. Bright of London, who first described it. Source: Websters Dictionary (01 Mar 1998) |
| Brill's disease | Recrudescence of epidemic typhus years after the initial attack. The agent that causes epidemic typhus (Rickettsia prowazekii) remains viable for many years and then when host defenses are down, it is reactivated causing recurrent typhus. The disease is named for the physician Nathan Brill and the great bacteriologist Hans Zinsser. (12 Dec 1998) |
| Brill-Symmers disease | An obsolete term for nodular lymphoma. (05 Mar 2000) |
| brill-zinsser disease | Recrudescence of epidemic typhus years after the initial attack. The agent that causes epidemic typhus (Rickettsia prowazekii) remains viable for many years and then when host defenses are down, it is reactivated causing recurrent typhus. The disease is named for the physician Nathan Brill and the great bacteriologist Hans Zinsser. (12 Dec 1998) |
| Briquet's disease | Hysterical neurosis, conversion type. (05 Mar 2000) |
| brisket disease | A disease of cattle, characterised by edematous swelling of the brisket and the tissues of the neck; the body cavities also contain large quantities of clear straw-coloured transudate; this disease results from right heart failure as a consequence of increased pulmonary resistance, which is in some way associated with movement of animals to high altitudes. Synonym: mountain sickness. (05 Mar 2000) |