PMC9375554_01
(A-C) multiple erythematous papules/ plaques covered with crust on the scalp and face ranging from 0.5 to 1.5cm. (D) an erythematous papulovesicle on the abdomen. (E) single oval, 1cm-sized, sharply demarcated ulcer located on the penis. (F) an erythematous ulcer on the right calf.
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In addition, a single oval, 1cm-sized, sharply demarcated ulcer is located on the penis (Figure 1).
(A) an epidermal acanthosis and a lichenoid lymphocyte infiltrate in the superficial dermis with dermal edema (the papulovesicle on the abdomen, HE, x100), (B) a dense polymorphic inflammatory dermal infiltrate, very rich in neutrophils (the ulcer on the calf, HE, x100).
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Skin biopsies revealed epidermal acanthosis and a lichenoid infiltration of lymphocytes in the superficial dermis with dermal edema (the papule on the abdomen) and a dense polymorphic inflammatory dermal infiltrate, very rich in neutrophils, compatible with PG (the ulcer on the calf) (Figure 2).