A man in his 60s was referred to our clinic because of a well-demarcated, circular erythematous plaque that had been present at the area of median sternotomy for 3 months. Physical examination findings revealed a 20-cm–diameter plaque that consisted of multiple concentric annular formations with raised erythematous margins and studded with numerous blisters and pustules, some coalescing into lakes of pus (Figure 1A). Nikolsky sign was not elicited, and oral, ocular, and genital mucosa involvement was absent. The patient did not report other symptoms, and findings of the overall physical examination were normal.
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Kyriakou G, Gialeli E, Georgiou S. Circular Erythematous Plaque at the Area of Median Sternotomy. JAMA Dermatol. Published online December 11, 2019. doi:10.1001/jamadermatol.2019.3883
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