Microscopic Polyangiitis Diagnostic Criteria (mPAN) Medical Algorithm

Are you evaluating a patient with a systemic vasculitis?

Yes

Is the vasculitis necrotizing?

Yes

Does the patient have cANCA and/or pANCA in the serum?

Yes

Does the vasculitis involve?

• arterioles, capillaries and venules?

Yes

• small arteries?

Yes

• medium arteries?

Yes

• large arteries?

Yes

• glomeruli (with necrotizing glomerulonephritis)?

Yes

• pulmonary alveolar capillaries?

Yes

Number of immune deposits

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Data complete?

Evaluation appropriate?

Number of essential findings present

Number of additional findings present

Number of findings present that make mPAN unlikely

Does the patient have microscopic polyangiitis?

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Interpretation and Description

References

Next Steps in Evaluation

Differential Diagnosis And Mimics, Red Flags
- Differentiating Microscopic Polyangiitis from Polyarteritis Nodosa (PAN)

Evaluation

Results

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Specialty

Objective

ICD-10

Criteria for Microscopic Polyangiitis from the International Consensus Conference on the Nomenclature of Systemic Vasculitis (Chapel Hill Conference)

Purpose: Purpose: To evaluate a patient with vasculitis for evidence of microscopic polyangiitis (mPAN),

Evaluation

Results

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MedicalAlgorithms.com APIs

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Specialty

Objective

ICD-10