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Antineutrophil Cytoplasmic Antibody Associated Vasculitis
Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a group of vasculitides characterized by small- to medium-sized blood vessel inflammation, clinically overlapping features, and the presence of ANCA. This group comprises granulomatosis with polyangiitis (GPA), formerly Wegener granulomatosis; microscopic polyangiitis (MPA);…