Table 1.
Etiology of pulmonary vasculitis
| Most frequent cause |
| ANCA vasculitis and granulomatosis |
| Granulomatosis with polyangiitis |
| Microscopic polyangiitis |
| Eosinophilic granulomatosis with polyangiitis |
| Less frequent causes |
| Other systemic vasculitis |
| Antiglomerular basement membrane disease |
| IgA vasculitis |
| Behcet’s disease |
| Cryoglobulinemic vasculitis |
| Takayasu arteritis |
| Autoimmune diseases |
| Systemic lupus erythematosus |
| Antiphospholipid syndrome |
| Sarcoidosis |
| Rheumatoid arthritis |
| Infections |
| Bacteria, e.g., mycobacteria, syphilis, rickettsias |
| Fungus, e.g., aspergillosis, histoplasmosis |
| Virus, e.g., herpes zoster |
| Malignancy |
| Drugs-induced ANCA vasculitis |
| Propylthiouracil, diphenylhydantoin, levamisole-adulterated cocaine |