期刊
IMMUNOLOGIC RESEARCH
卷 70, 期 4, 页码 550-559出版社
SPRINGER
DOI: 10.1007/s12026-022-09279-8
关键词
Immunoglobulin G4-related disease; ANCA-associated vasculitis; Granulomatosis with polyangiitis; Overlap syndrome; Aortitis
类别
Anti-neutrophil cytoplasmic antibodies (ANCA)-associated vasculitides and IgG4-related disease are two distinct autoimmune diseases that share similarities in clinical, serological, radiological, and histopathological features, and can coexist in the same patient.
Anti-neutrophil cytoplasmic antibodies (ANCA)-associated vasculitides are infrequent autoimmune diseases characterized by inflammation of the walls of small vessels leading to tissue and endothelial damage. On the other hand, IgG4-related disease is a fibroinflammatory disease characterized histologically by lymphoplasmacytic infiltrates with IgG4+ plasma cells, storiform fibrosis, and obliterative phlebitis that may affect nearly every organ of the body. There are similarities in clinical, serological, radiological, and histopathological features between both diseases, and hence, they usually mimic each other complicating the differential diagnosis. Furthermore, reports of patients with the coexistence of both conditions (overlap syndrome) have been reported. We herein report a patient with an unequivocal diagnosis of ANCA-associated vasculitis, specifically granulomatosis with polyangiitis (posterior uveitis, polyneuropathy, pauci-immune glomerulonephritis with crescent formation and granulomas, and MPO-ANCA positivity) and IgG4-related disease (thoracic aortitis, tubulointerstitial nephritis with prominent IgG4+ plasma cell infiltration, fibrosis, and obliterative arteritis, high levels of serum IgG4, and eosinophilia) overlap syndrome.
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