PMC6792272_01
(a) Erythematous papules and plaques located on the patient's abdomen. The papules and plaques favour the striae and spare the umbilicus. (b) The plaques on the arms are targetoid and reminiscent of erythema multiforme.
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She had scattered erythematous papules, coalescing into plaques on her abdomen (Figure 1(a)), back and legs with sparing of the periumbilical area. On the arms, she had multiple erythematous targetoid plaques (Figure 1(b)).
Biopsy of lesional skin shows a superficial perivascular infiltrate of lymphocytes, histiocytes and occasional eosinophils. Focal, mild spongiosis is present. Subepidermal blistering is absent (Hematoxylin and eosin, 40x). Direct immunofluorescence of perilesional skin was negative (not shown).
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The hematoxylin and eosin (H&E) slide demonstrated findings consistent with PEP (Figure 2).