Gastrointestinal symptoms as first remarkable signs of ANCA-associated granulomatosis with polyangiitis: a case report and reviews

摘要

Signs of small-vessel vasculitis and crescentic glomerulonephritis in the patient’s kidney biopsy sample. Inflammation of a small arteriole close to the renal capsule with fibrinoid necrosis. Magnification: × 200, haematoxylin–eosin (a). Two affected glomeruli with fibrinoid necrosis and crescent formation. Magnification: × 200, Jones’ stain (b). Crescent formation in a glomerulus. Magnification: × 600, Jones’ stain (c)