May Be Caused by

 Common

Acute respiratory distress syndrome

Atypical mycobacterial infection

Bacillary angiomatosis

Bronchogenic carcinoma

Cytomegalovirus infection

Drug-induced lung disease

Fungal disease

Infantile respiratory distress syndrome

Kaposi sarcoma

Lymphoma

Metastasis

Oxygen toxicity

Pneumocystis carinii pneumonia

Pulmonary embolism

Pulmonary infarction

Recurrent lung cancer

Rhodococcus equi

Strongyloidiasis

Toxoplasmosis

Tuberculosis

 Uncommon

Alveolar proteinosis

Aspiration pneumonia

Cardiogenic pulmonary edema

Graft-versus-host disease

Leukoagglutination

Lymphangiography reaction

Lymphocytic interstitial pneumonitis

Noncardiogenic pulmonary edema

Nonspecific interstitial pneumonitis

Primary pulmonary hypertension

Pulmonary hemorrhage

Radiation injury