PMC7083181_01
Purpuric lesions with pustules and necrotic tissue
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PMC7083181_01_1403_Fig1.jpg
f1-1403-1-11753-1-10-20200212
On the physical evaluation, he presented multiple purpuric lesions with ulcers, pustules and necrotic tissue on his legs (Figs. 1 and 2) and petechiae on his arms.
Purpuric lesions with ulcers
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PMC7083181_01_1403_Fig2.jpg
f2-1403-1-11753-1-10-20200212
On the physical evaluation, he presented multiple purpuric lesions with ulcers, pustules and necrotic tissue on his legs (Figs. 1 and 2) and petechiae on his arms.
Haematoxylin and eosin staining showing areas with detachment of the corneal layer with keratinocyte necrosis
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PMC7083181_01_1403_Fig3.jpg
f3-1403-1-11753-1-10-20200212
A cutaneous biopsy was performed, showing areas with detachment of the corneal layer with keratinocyte necrosis and abundant polymorphonuclear cells (Fig. 3) and polymorphonuclear infiltration of the arteries of the deep dermis and hypodermis with focal signs of vasculitis (Fig. 4), compatible with polyarteritis nodosa.