Table 3.

Differential diagnosis of radiographic chest infiltrates

Alveolar infiltrates	Interstitial infiltrates
Infection (pneumonia)	Infection (pneumonia)
Atelectasis	Cystic fibrosis
Pulmonary edema	Bronchopulmonary dysplasia
Hyaline membrane disease	Histiocytosis
Aspiration	Collagen-vascular diseases
Hemorrhage	Sarcoidosis
Hypersensitivity reactions	Pulmonary edema
Lymphoma (Hodgkin's or non-Hodgkin's)	Hemorrhage
Leukemia	Metastatic tumors
Sarcoidosis	Irradiation
Pulmonary alveolar proteinosis	Gaucher's disease
Intralobar sequestration	Niemann-Pick disease
Pulmonary contusion	Tuberous sclerosis
Pulmonary eosinophilia	Neurofibromatosis
	Lymphangiectasia
	Interstitial pneumonitis