
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D. Polyarteritis nodosa
Polyarteritis nodosa (PAN) is a necrotizing systemic vasculitis involving the wall of small and medium sized arteries. The histologic aspect is defined by the presence of fibrinoid necrosis and an infiltrate rich in neutrophil
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polynuclears in the artery wall and rare granulomas. Clinical manifestations are misleading, and more often the symptoms of the disease are retrospectively related to the PAN.
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