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Differentiating Microscopic Polyangiitis from Polyarteritis Nodosa (PAN)

Purpose:

To distinguish microscopic polyangiitis (mPA) from polyarteritis nodosa (PAN) in a patient with vasculitis.

Specialty:

Immunology/Rheumatology

Objective:

differential diagnosis and mimics, red flags

ICD-10:

M30.0, M31.7

Description:

Microscopic polyangiitis (microscopic polyarteritis, mPA, mPAN) and polyarteritis nodosa (PAN) may overlap in their clinical and pathologic features. Over time certain findings may be found that favor the diagnosis of one over the other.

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