Abstract
Anti-neutrophil cytoplasmic antibody (ANCA) associated vasculitis (AAV) is a group of systemic small vasculitis characterized by ANCA positive in serum. Three diseases are included in this group of diseases: granulomatosis with polyangiitis (GPA), microscopic polyangiitis (MPA) and eosinophilic granulomatosis with polyangiitis (EGPA). In China, standardized diagnosis and treatment of AAV is still lacking. Based on the evidence and guidelines from China and abroad, the Chinese Rheumatology Association formulated the standardization of diagnosis and treatment of ANCA associated vasculitis. The purpose is to standardize the diagnosis of AAV and disease activity assessment, and recommend the treatment strategies.
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