May Be Caused by

Actinomycosis

Alveolar proteinosis

Blastomycosis

Bronchogenic carcinoma

Chronic aspiration pneumonia

Coal-worker pneumoconiosis

Fungal disease

Hemolytic-uremic syndrome

Hilar lymphadenopathy

Lipoid pneumonia

Lymphoma

Metastasis

Pneumoconiosis

Pneumonia

Pulmonary edema

Pulmonary hemorrhage

Silicosis

Tuberculosis