Group of systemic vasculitis with a strong association with ANCA. The disorders are characterized by necrotizing inflammation of small and medium size vessels, with little or no immune-complex deposits in vessel walls.

Synonyms: Vasculitis, Pauci-Immune, ANCA-Associated Vasculitide, Vasculitides, Pauci-Immune, Pauci Immune Vasculitis, ANCA-Associated Vasculitides, ANCA Associated Vasculitides, Anti Neutrophil Cytoplasmic Antibody Associated Vasculitis, Vasculitis, ANCA-Associated, Pauci-Immune Vasculitides, Pauci-Immune Vasculitis, ANCA Associated Vasculitis, Vasculitides, ANCA-Associated, ANCA-Associated Vasculitis, Vasculitide, ANCA-Associated, Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis