| MAD | major affective disorder; mandibulo-acral dysplasia; maximum allowable dose; methylandrostenediol; m... |
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| MAFD | manic affective disorder |
| MD | Doctor of Medicine [Lat. Medicinae Doctor]; magnesium deficiency; main duct; maintenance dose; major... |
| MDD | major depressive disorder; mean daily dose |
| MPD | main pancreatic duct; maximum permissible dose; mean population doubling; membrane potential differe... |
| pulmonary adenomatosis | A neoplastic disease in which the alveoli and distal bronchi are filled with mucus and mucus-secreting columnar epithelial cells; characterised by abundant, extremely tenacious sputum, chills, fever, cough, dyspnea, and pleuritic pain. (05 Mar 2000) |
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| pulmonary adenomatosis of sheep | A chronic pulmonary disease of sheep of viral origin, caused by a member of Herpesviridae characterised by adenomatous proliferations in the alveoli and small bronchioles resembling neoplasia. Synonym: jaagsiekte. (05 Mar 2000) |
| pulmonary adenomatosis, ovine | A pulmonary disease of sheep characterised by hyperplasia and hypertrophy of septal cells of the lung. (12 Dec 1998) |
| pulmonary alveolar proteinosis | <radiology> Overproduction of surfactant which can lead to alveolar (end-air-space) filling, peak age: 20 - 50 yrs, 33% asymptomatic, treatment: lavage Findings: bat-wing alveolar infiltrate, no interstitial disease, no adenopathy (12 Dec 1998) |
| pulmonary alveoli | Small polyhedral outpouchings along the walls of the alveolar sacs, alveolar ducts and terminal bronchioles through the walls of which gas exchange between alveolar air and pulmonary capillary blood takes place. (12 Dec 1998) |
| pulmonary alveolus | One of the thin-walled saclike terminal dilations of the respiratory bronchioles, alveolar ducts, and alveolar sacs across which gas exchange occurs between alveolar air and the pulmonary capillaries. Synonym: alveoli pulmonis, alveolus, air cells, air vesicles, bronchic cells. (05 Mar 2000) |
| pulmonary amoebiasis | Infection of the lung by amoebae; usually indicates extension of Entamoeba histolytica infection from abscess of liver, penetrating through the diaphragm into the lung. (05 Mar 2000) |
| pulmonary angiogram | <investigation, radiology> A diagnostic procedure which involves the injection of a radiopaque substance into the pulmonary artery to highlight its course on X-ray. Pulmonary embolism can be accurately diagnosed using this procedure. (15 Dec 1997) |
| pulmonary anthrax | A form of anthrax acquired by inhalation of dust containing Bacillus anthracis; there is an initial chill followed by pain in the back and legs, rapid respiration, dyspnea, cough, fever, rapid pulse, and extreme cardiovascular collapse. Synonym: anthrax pneumonia, ragpicker's disease, ragsorter's disease, rag-sorter's disease, wool-sorter's pneumonia, woolsorter's disease, wool-sorter's disease. (05 Mar 2000) |
| pulmonary arc | An obsolete term for pulmonary salient. (05 Mar 2000) |
| pulmonary area | The region of the chest at the second left intercostal space, where sounds produced at the pulmonary valve of the right ventricle are heard most distinctly. (05 Mar 2000) |
| pulmonary arteries | <anatomy> The pulmonary arteries deliver deoxygenated blood from the right ventricle to the lungs. They are the only arteries in the human body that carry deoxygenated blood. (27 Sep 1997) |
| pulmonary artery | <anatomy, artery> The short wide vessel arising from the conus arteriosus of the right ventricle and conveying unaerated blood to the lungs. (12 Dec 1998) |
| pulmonary artery aneurysm | Aneurysm of the pulmonary artery; rare in the absence of congenital heart disease. (05 Mar 2000) |
| pulmonary artery banding | A surgical method of decreasing pulmonary blood flow and thereby volume overload of the left ventricle, alleviating CHF in certain congenital heart defects. (05 Mar 2000) |