| compensating emphysema | Compensatory emphysema, increase in the air capacity of a portion of the lung when another portion is consolidated, shrunken, or unable to perform its respiratory function; the alveoli are distended, but there is no destruction of alveolar walls, and hence, no true emphysema, as this term is now defined. (05 Mar 2000) |
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| compensating curve | The anteroposterior and lateral curvature in the alignment of the occluding surfaces and incisal edges of artificial teeth; used to develop balanced occlusion. (05 Mar 2000) |
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| compensating eyepieces | <microscopy> Those designed for use with objectives such as apochromats in order to correct chromatic aberration. (05 Aug 1998) |
| compensating ocular | An ocular that compensates and corrects for the effects of chromatic aberration in the objective. (05 Mar 2000) |
| alveolar duct emphysema | Emphysema in which the primary involvement is in the alveolar ducts and respiratory bronchioles, as opposed to panacinar emphysema. (05 Mar 2000) |
| bullous emphysema | Emphysema in which the enlarged airspaces are one to several cm in diameter, often visible on chest radiographs. Thin-walled air sacs under tension compress pulmonary tissue, either single or multiple. Sometimes amenable to surgical resection with improvement in pulmonary function. (05 Mar 2000) |
| gangrenous emphysema | <microbiology> A severe form of gangrene (tissue necrosis) caused by Clostridium infection. Also referred to as necrotising subcutaneous infection. Results in death of the subcutaneous tissues and muscle layers. See: necrotising fascitis. (27 Sep 1997) |
| panacinar emphysema | Emphysema affecting all parts of the lobules, in part, or usually the whole, of the lungs, and usually associated with a1-antiprotease deficiency emphysema. Synonym: diffuse emphysema, generalised emphysema, panacinar emphysema. (05 Mar 2000) |
| panlobular emphysema | Emphysema affecting all parts of the lobules, in part, or usually the whole, of the lungs, and usually associated with a1-antiprotease deficiency emphysema. Synonym: diffuse emphysema, generalised emphysema, panacinar emphysema. (05 Mar 2000) |
| generalised emphysema | Emphysema affecting all parts of the lobules, in part, or usually the whole, of the lungs, and usually associated with a1-antiprotease deficiency emphysema. Synonym: diffuse emphysema, generalised emphysema, panacinar emphysema. (05 Mar 2000) |
| paraseptal emphysema | Emphysema involving the periphery of the pulmonary lobules. (05 Mar 2000) |
| mediastinal emphysema | Presence of air in the mediastinal tissues due to leakage of air from the tracheobronchial tree, usually as a result of trauma. (12 Dec 1998) |
| centri-acinar emphysema | Emphysema affecting the lobules around their central bronchioles, causally related to bronchiolitis, and seen in coal-miner's pneumoconiosis. Synonym: centri-acinar emphysema. (05 Mar 2000) |
| centrilobular emphysema | Emphysema affecting the lobules around their central bronchioles, causally related to bronchiolitis, and seen in coal-miner's pneumoconiosis. Synonym: centri-acinar emphysema. (05 Mar 2000) |
| congenital lobar emphysema | <radiology> Caused by bronchial cartilage abnormality, SOLID mass at birth: dilated alveoli filled with foetal lung fluid, usually in UPPER lobes (including RML), Treatment: surgical lobectomy Cf: cystic adenomatoid malformation (12 Dec 1998) |
| cutaneous emphysema | The presence of air in the subcutaneous tissue, may be seen in cases of pneumothorax. (27 Sep 1997) |