<unk> " refers to unresolved pneumonia (in which the alveolar exudate persists and eventually undergoes fibrosis) in which fibrous tissue forms in the alveoli. The phase of resolution and/or remodeling following bacterial infections is commonly referred to as<unk>  pneumonia, both clinically and pathologically. The American Thoracic Society and the European Respiratory Society hold that<unk> " is the preferred clinical term for this disease for multiple reasons: *Avoid confusion with bronchiolitis obliterans, which may not be visualized in every case of this disease. *Avoid confusion with constrictive bronchiolitis *Emphasize the<unk>  nature of the disease
Cryptogenic organizing pneumonia
Acute eosinophilic pneumonia
Atypical pneumonia
Allergic bronchopulmonary aspergillosis
Chronic pulmonary aspergillosis
Eosinophilic pneumonia
Parasitic pneumonia
Fungal pneumonia