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Cutaneous polyarteritis nodosa in patients presenting with atrophie blanche

Summary Background The term ‘atrophie blanche’ is used both as a descriptive term denoting ivory‐white stellate scars on the lower limbs as well as a diagnostic label synonymous with livedoid vasculitis, an ill‐defined entity. Medium‐sized vasculitides, such as polyarteritis nodosa (PAN), occasionally present with ulceration resulting in ivory‐white stellate scarring on the lower limbs and may potentially be misdiagnosed as livedoid vasculitis.