Neutrophil-Predominant BAL

• Bacterial Pneumonia:
• BOOP

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Lymphocyte-Predominant BAL

• HP
• Sarcoid
• TB
• Fibrosis

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BAL Eosinophilia (>20%)

• Pulmonary Eosinophilia: due to Acute Eosinophilic Pneumonia, Chronic Eosinophilic Pneumonia, IPF
• Infection: Strongyloides, PCP, TB, Cocci
• ABPA:
• Rheum Diseases: RA, Sjogren’s,
• Drug-Induced Lung Disease:
• Hypereosinophilic Syndrome:
• Churg-Strauss Sydrome:
• GVHD (in BMT/SCT):
• Lung Allograft Rejection:
• Sarcoidosis:

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BAL with Hemosiderin-Laden Macrophages (>20%)

• DAH

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