Indurated plaque on the trunk

An 83-year-old woman presented to the clinic with erythema and induration of the left back and chest. The induration had progressed over 3 years; however, the erythema started after she developed multiple sores within the area of induration about 3 months before her presentation. Her medical history was significant for a history of breast cancer status-post double mastectomy and chemotherapy. The physical examination revealed a red to purple firm indurated plaque over her left chest wrapping around the lateral thorax to involve a large portion of the left flank (Figs 1 and 2).

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