" /> Microscopic Polyarteritis - CISMeF





Preferred Label : Microscopic Polyarteritis;

NCIt synonyms : MPA;

NCIt related terms : Microscopic polyangiitis;

NCIt definition : A systemic necrotizing vasculitis that typically affects the small and medium-sized muscular arteries. In some cases, however, microscopic vessels are also affected (e.g., in the kidneys), a condition that has been called microscopic polyarteritis or polyangiitis; this disorder is felt to be more closely associated with Wegener granulomatosis than to classic polyarteritis nodosa.;

Alternative definition : NICHD: Systemic vasculitis affecting small vessels that is necrotizing and non-granulomatous, with little to no immune complex deposition. Clinically it is characterized by involvement of the kidneys, skin, lung, and peripheral nerves. Antineutrophil cytoplasmic antibody (anti-myeloperoxidase (anti-MPO)) is positive in most cases.;

Codes from synonyms : M31.7;

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31/07/2025


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