The differential diagnosis of<unk><unk>  is, primarily, a group of diseases known as idiopathic interstitial pneumonia. This group of diseases includes idiopathic pulmonary fibrosis (IPF) (which manifests histologically as usual interstitial pneumonia), idiopathic non-specific interstitial pneumonia (NSIP) and cryptogenic organizing pneumonia, among others. There are several important clinical syndromes that occur as a result of inhalation of organic agents but are not true forms of<unk><unk> .
Hypersensitivity pneumonitis differential diagnosis
Idiopathic interstitial pneumonia differential diagnosis
Bronchiolitis differential diagnosis
Bronchiectasis differential diagnosis
Bronchitis differential diagnosis
Alpha 1-antitrypsin deficiency differential diagnosis
Chronic bronchitis differential diagnosis
Acute bronchitis differential diagnosis