This case report details a rare presentation of a widely metastatic undifferentiated sarcoma with lesions in multiple skin sites.
Alerts clinicians to rare cutaneous metastases from pleomorphic sarcoma; leaves open questions on metastatic patterns pending larger series.
Rarely, the dermatologist may encounter a primary cutaneous pleomorphic sarcoma (also known as a malignant fibrous histiocytoma), an undifferentiated neoplasm thought to be of mesenchymal origin.1 These uncommon skin tumors typically manifest as tender subcutaneous nodules. In contrast to primary cutaneous sarcomas, we present a case of a soft tissue pleomorphic sarcoma with multiple metastases to the cutaneous scalp and the groin. Although previous reports have described leiomyosarcoma metastatic to the skin, no report to our knowledge has detailed a widely metastatic undifferentiated sarcoma with lesions in multiple skin sites.
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Staser et al. (2015) studied this question.
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