Chronic bilateral airspace opacification (differential)
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Chronic bilateral airspace opacification is a subset of the differential diagnosis for airspace opacification. An exhaustive list of all possible causes of chronic bilateral airspace opacities is long, but a useful framework is as follows:
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inflammatory
- sarcoidosis
- granulomatosis with polyangiitis
- eosinophilic lung disease
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cryptogenic organizing pneumonia
, formerly- formerly bronchiolitis obliterans organizing pneumonia (BOOP) - polyarteritis nodosa (PAN)
- Churg-Strauss syndrome
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infective
- tuberculosis
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fungal lung infection
,- especially in immunocompromised patients - incompletely treated infection
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neoplastic / lymphoproliferative
- lymphoma
- lymphoid interstitial pneumonia (LIP)
- bronchoalveolar carcinoma (BAC)
- post obstructive
-<a href="/articles/cryptogenic-organising-pneumonia-1">cryptogenic organizing pneumonia</a>, formerly bronchiolitis obliterans organizing pneumonia (BOOP)</li>- +<a href="/articles/cryptogenic-organising-pneumonia-1">cryptogenic organizing pneumonia</a> - formerly bronchiolitis obliterans organizing pneumonia (BOOP)</li>
-<a href="/articles/fungal-lung-infection">fungal lung infection</a>, especially in immunocompromised patients</li>- +<a href="/articles/fungal-lung-infection">fungal lung infection</a> - especially in immunocompromised patients</li>
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