Polyarteritis Nodosa |
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| Arteritides, Necrotizing; Arteritis, Necrotizing; Essential Polyarteritides; Necrotizing Arteritides; Polyarteritides, Essential; Polyarteritis, Essential | |
| A form of necrotizing vasculitis involving small- and medium-sized arteries. The signs and symptoms result from infarction and scarring of the affected organ system. | |