Polyarteritis nodosa (PAN) is a recurrent necrotising vasculitis of medium and small muscular arteries. (1)
Angiography demonstrates multiple aneurysms at vessel bifurcations.
The classic form of PAN does not affect small vessels and does not cause a glomerulonephritis.
Reference:
1. Polyarteritis Nodosa - a contemporary overview. U.S. National Library of Medicine 2016. Available from: https://pubmed.ncbi.nlm.nih.gov/26884100/
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