Polyarteritis Nodosa Differential Diagnoses
- Author: Dana Jacobs-Kosmin, MD; Chief Editor: Herbert S Diamond, MD more...
Diagnostic Considerations
The diagnosis of polyarteritis nodosa (PAN) can be difficult because of the spectrum of clinical manifestations and the rarity of the disease. Mimics of vasculitis, including processes that lead to a loss of vascular integrity and blood-vessel occlusion, alternate forms of vasculitis, and syndromes associated with vasculitis should be considered.
Microscopic polyangiitis (MPA; formerly called microscopic polyarteritis) and granulomatosis with polyangiitis (GPA; the disease formerly known as Wegener granulomatosis [WG]) are ANCA-associated systemic vasculitides that have some features similar to those of classic PAN, with the additional involvement of renal glomeruli and pulmonary capillaries.
A clear distinction should be made between limited disease versus systemic disease and idiopathic PAN versus hepatitis B–related PAN, because differences exist in the prognosis and treatment.
Differential Diagnoses
- Antiphospholipid Syndrome
- Atrial Myxoma
- Cholesterol Embolism
- Churg-Strauss Syndrome
- Cryoglobulinemia
- Ehlers-Danlos Syndrome
- Goodpasture Syndrome
- Henoch-Schoenlein Purpura
- Infective Endocarditis
- Leukocytoclastic (small vessel) vasculitis
- Microscopic Polyangiitis
- Wegener Granulomatosis
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