Steven R. Ytterberg, Author at Rheumatology Advisor

Steven R. Ytterberg

All articles by Steven R. Ytterberg

Vasculitis: Medium Vessel (PAN)

Does this patient have polyarteritis nodosa (PAN)? Polyarteritis nodosa (PAN) is a form of necrotizing vasculitis primarily affecting medium-sized arteries with muscular walls, although small arteries can be affected at times. Vascular inflammation is the crucial element defining PAN. PAN has been considered the prototype of vasculitis but is now diagnosed less frequently than in…

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