| bronchial adenoma | <radiology> Most common benign lung tumour (but only 1/50 as common as carcinoma), malignant potential, 75% resemble carcinoid tumour or cylindroma, possibly benign form of oaT-cell tumour, haemoptysis, bronchial obstruction most likely to be air-trapping (12 Dec 1998) |
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| bronchial anatomy | <radiology> Normal anatomy: right bronchus: eparterial, left bronchus: hyparterial, may help determine situs (12 Dec 1998) |
| bronchial arteries | Left bronchial arteries arise from the thoracic aorta, the right from the first aortic intercostal or the upper left bronchial artery; they supply the bronchi and the lower trachea. (12 Dec 1998) |
| bronchial asthma | A condition of the lungs in which there is widespread narrowing of airways, varying over short periods of time either spontaneously or as a result of treatment, due in varying degrees to contraction (spasm) of smooth muscle, oedema of the mucosa, and mucus in the lumen of the bronchi and bronchioles; these changes are caused by the local release of spasmogens and vasoactive substances (e.g., histamine, or certain leukotrienes or prostaglandins) in the course of an allergic process. (05 Mar 2000) |
| bronchial atresia | Severe focal narrowing or obliteration of a segmental or lobar bronchus, usually associated with distal air trapping. (05 Mar 2000) |
| bronchial breathing | Breath sounds of a harsh or blowing quality, heard on auscultation of the chest, made by air moving in the large bronchi and barely, if at all, modified by the intervening lung; duration of the expiratory sound is as long as or longer than that of the inspiratory sound, and its pitch as high as or higher than that of the inspiratory sound; may be heard over a consolidated lung, above a pleural effusion due to an underlying compressed lung, and rarely over a pulmonary cavity; whispered pectoriloquy is another manifestation that usually can be elicited when bronchial breathing is present. (05 Mar 2000) |
| bronchial bud | One of the outgrowths from the primordial endodermal laryngotracheal tube giving rise to the primary bronchi. See: laryngotracheal diverticulum. (05 Mar 2000) |
| bronchial calculus | A hard concretion in a bronchus or bronchial tube. Synonym: bronchial calculus. Origin: broncho-+ G. Lithos, stone (05 Mar 2000) |
| bronchial fistula | An abnormal passage or communication between a bronchus and another part of the body. (12 Dec 1998) |
| bronchial fremitus | Adventitious pulmonary sounds or voice sounds perceptible to the hand resting on the chest, as well as by the ear. (05 Mar 2000) |
| bronchial glands | Mucous and seromucous glands whose secretory units lie outside the muscle of the bronchi. See: bronchopulmonary lymph nodes. (05 Mar 2000) |
| bronchial hyperreactivity | Tendency of the smooth muscle of the tracheobronchial tree to contract more intensely in response to a given stimulus than it does in the response seen in normal individuals. This condition is present in virtually all symptomatic patients with asthma. The most prominent manifestation of this smooth muscle contraction is a decrease in airway caliber that can be readily measured in the pulmonary function laboratory. (12 Dec 1998) |
| bronchial pneumonia | <chest medicine> A name given to an inflammation of the lungs which usually begins in the terminal bronchioles. These become clogged with a mucopurulent exudate forming consolidated patches in adjacent lobules. The disease is frequently secondary in character, following infections of the upper respiratory tract, specific infectious fevers and debilitating diseases. In infants and debilitated persons of any age it may occur as a primary affection. Synonym: bronchial pneumonia, bronchoalveolitis, bronchopneumonitis, lobular pneumonia. (11 Jan 1998) |
| bronchial polyp | A polyp growing from the bronchial mucosa. (05 Mar 2000) |
| bronchial provocation tests | Tests involving inhalation of allergens (nebulised or in dust form), nebulised pharmacologically active solutions (e.g., histamine, methacholine), or control solutions, followed by assessment of respiratory function. These tests are used in the diagnosis of asthma. (12 Dec 1998) |