Case Reports: Mimics of Polyarteritis Nodosa Shane Murray, BMBS, RhMSUS, Zhe Ran Duan, MD, PhD, & Daniel DeMizio, MD | September 8, 2025When polyarteritis nodosa isn’t PAN: Two cases of mimics, segmental arterial mediolysis (SAM) & vascular Ehlers-Danlos syndrome (vEDS), are explored.