GPA | |
Extravascular necrotizing granulomatous inflammation of the upper and/or lower respiratory tracts | |
Systemic necrotizing small vessel vasculitis | |
Frequent necrotizing glomerulonephritis | |
MPA | |
Systemic necrotizing small vessel vasculitis | |
Frequent necrotizing glomerulonephritis and pulmonary capillaritis | |
No granulomatous inflammation | |
EGPA | |
Extravasal eosinophile-rich and necrotizing granulomatous inflammation of the respiratory tract | |
With bronchial asthma and eosinophilia-associated systemic necrotizing small vessel vasculitis | |
eosinophilic infiltrate (≥ 4 of 6 critera) |