Cavitary Lung Disease - Differential Diagnosis and Workup Algorithm

Acute / Subacute:

 • Acute Infections: Lung abscess, Necrotizing Pneumonia, Septic Emboli, Fungal Infection, Nocardia

Chronic (≥ 12 weeks):

 • Chronic Infections: TB, NTB, Fungal, Parasitic, Viral

 • Malignancy: Primary lung cancer, Metastatic lung disease

 • Autoimmunity: RA, GPA



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