Ultimately, a clinical diagnosis
Troponins for pericarditis
Severe leukocytosis on CBC
Sepsis workup
CHF workup, echo
Pulmonary embolism workup
DIC workup
Coagulation factor levels
Diagnostic bronchoscopy, BAL, biopsy usually not required
Imaging
CXR - pleural effusions, ground-glass opacities, increased cardiac silhouette
CT chest - pleural effusions, peripheral nodules
CXR - pleural effusions, ground-glass opacities, increased cardiac silhouette
CT chest - pleural effusions, peripheral nodules
Retinoic acid syndrome
Sepsis
Down syndrome
Fungal infection
Grey baby syndrome
Pulmonary hemorrhage
DiGeorge syndrome
Pneumonia