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Antineutrophil Cytoplasmic Antibody–Positive Vasculitis: Comorbid and Coexisting 

Antineutrophil Cytoplasmic Antibody–Positive Vasculitis: Comorbid and Coexisting
Chapter:
Antineutrophil Cytoplasmic Antibody–Positive Vasculitis: Comorbid and Coexisting
Author(s):

Lanny J. Rosenwasser

and Dennis K. Ledford

DOI:
10.1093/med/9780199918065.003.0002
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date: 09 May 2021

The antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis syndromes— eosinophilic granulomatosis with polyangiitis (Churg-Strauss syndrome or allergic angiitis with granulomatosis), granulomatous polyangiitis (Wegener’s granulomatosis), and microscopic polyangiitis—are serious comorbidities of asthma or upper respiratory disease, or the symptoms of the vasculitis may resemble asthma or associated upper airway disease. ANCA-associated vasculitis is potentially fatal but is responsive to a variety of treatments, if the vasculitis is recognized before serious organ dysfunction. The role of ANCA in these conditions has not been defined because eosinophilic granulomatosis with polyangiitis, granulomatous polyangiitis, or microscopic polyangiitis may occur without ANCA, and the titer of ANCA does not predict clinical course. Clinical suspicion and consideration of tissue biopsy are important for recognition before irreversible complications occur. Corticosteroid therapy for asthma or suspected asthma may modify the presentations of ANCA-positive vasculitis.

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