Air bronchogram
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Air bronchogram refers to the phenomenon of air-filled bronchi (dark) being made visible by the opacification of surrounding alveoli (grey/white). It is almost always caused by a pathologic airspace/alveolar process, in which something other than air fills the alveoli. Air bronchograms will not be visible if the bronchi themselves are opacified (e.g. by fluid) and thus indicate patent proximal airways.
Air bronchograms can be seen with several processes:
- pulmonary consolidation
- pulmonary oedema
- non-obstructive atelectasis
- severe interstitial lung disease
- neoplasms: bronchioloalveolar carcinoma; pulmonary lymphoma
- pulmonary infarct
- normal expiration
The air bronchogram indicates patent proximal airways.
Air bronchograms that persist for weeks despite appropriate antimicrobial therapy should raise the suspicion of a neoplastic process. CT may be planned in such cases.
See also
-<p><strong>Air bronchogram</strong> refers to the phenomenon of air-filled bronchi (dark) being made visible by the opacification of surrounding alveoli (grey/white). It is almost always caused by a pathologic airspace/alveolar process, in which something other than air fills the alveoli. Air bronchograms will not be visible if the bronchi themselves are opacified (e.g. by fluid).</p><p>Air bronchograms can be seen with several processes:</p><ul>- +<p><strong>Air bronchogram</strong> refers to the phenomenon of air-filled bronchi (dark) being made visible by the opacification of surrounding alveoli (grey/white). It is almost always caused by a pathologic airspace/alveolar process, in which something other than air fills the alveoli. Air bronchograms will not be visible if the bronchi themselves are opacified (e.g. by fluid) and thus indicate patent proximal airways.</p><p>Air bronchograms can be seen with several processes:</p><ul>
-</ul><p>The air bronchogram indicates patent proximal airways.</p><p>Air bronchograms that persist for weeks despite appropriate antimicrobial therapy should raise the suspicion of a neoplastic process. CT may be planned in such cases.</p><h4>See also</h4><ul><li><a href="/articles/air-space-disease">airspace disease</a></li></ul>- +</ul><p>Air bronchograms that persist for weeks despite appropriate antimicrobial therapy should raise the suspicion of a neoplastic process. CT may be planned in such cases.</p><h4>See also</h4><ul><li><a href="/articles/air-space-disease">airspace disease</a></li></ul>
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