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Slowly progressive abdominal skin lesion of 15 years’ duration

A 25-year-old man was referred to our outpatient department with a 15-year history of a slowly growing tumor of the abdominal wall. Due to a teratoma of the right testicle with retroperitoneal lymph node metastases four years earlier, he had undergone radical retroperitoneal lymphadenectomy and radical orchiectomy. Clinical examination of the right lower abdomen revealed a poorly defined livid erythema, with small papules and a central plaque-like appearance. There was no epidermal involvement (Figure 1). The remaining integument and the oral mucosa were inconspicuous.