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The Classification & Diagnosis of Granulomatosis with Polyangiitis
Based on the classification system developed by the Chapel Hill Consensus Conference, anti-neutrophil cytoplasmic antibody (ANCA) associated vasculitis is defined as a necrotizing vasculitis involving small vessels that is associated with myeloperoxidase (MPO) ANCA or proteinase 3 (PR3) ANCA and displays minimal immune deposits. The mechanism behind the pathogenesis of ANCA-associated vasculitis is not fully…
The Granulomatosis of Wegener’s
Delving deeper into the nonvasculitis aspects of the disease
ACR Winter Rheumatology Symposium: Tips for ANCA Testing
How to select the correct testing method and interpret conflicting results from antineutrophil cytoplasmic antibody tests
Case Report: Hydralazine-Induced ANCA-Associated Vasculitis
Hydralazine has been in use as a treatment for hypertension, most notably in heart failure patients, since 1951.1 The drug is a known cause of autoimmune disease, most specifically hydralazine-induced lupus. Hydralazine-induced lupus occurs in 7–13% of those taking the medication.2-4 It often presents with constitutional symptoms, arthritis/arthralgias, cutaneous lesions, serositis, myalgias and/or hepatomegaly. Features…