title: The spectrum of systemic vasculitis: a classification to aid diagnosis.
abstract: Determining the cause of systemic vasculitis can be facilitated by a clinicopathologic classification of the syndrome. The considerations in differential diagnosis include periarteritis nodosa, leukocytoclastic angiitis (hypersensitivity angiitis, Schonlein-Henoch purpura, other disease-associated vasculitis), Wegener's granulomatosis, allergic granulomatosis (granulomatous angiitis), and giant cell arteritis.
mesh_terms: D001167:Arteritis / Q000473:pathology; D003937:Diagnosis, Differential; D013700:Giant Cell Arteritis / Q000473:pathology; D006099:Granuloma / Q000473:pathology; D014890:Granulomatosis with Polyangiitis / Q000473:pathology; D006801:Humans; D006967:Hypersensitivity / Q000473:pathology; D011695:IgA Vasculitis / Q000473:pathology; D007249:Inflammation / Q000175:diagnosis / Q000473:pathology; D007962:Leukocytes; D008297:Male; D008875:Middle Aged; D010488:Polyarteritis Nodosa / Q000473:pathology; D014652:Vascular Diseases / Q000145:classification* / Q000175:diagnosis / Q000473:pathology