Primary Cutaneous Ewing Sarcoma: Case Report and Review of Literature

Abstract

Ewing sarcoma (ES) is a primitive neuroectodermal tumor. It's usually a primary bone tumor but rarely occurs in the skin and subcutaneous tissues. Current literature reports only a few isolated cases or small series. To date, less than 100 cases have been reported. The diagnosis is made by aspiration cytology, histochemical stains, immunohistochemistry, electron microscopy, cytogenetics and molecular genetics of translocations. Cutaneous ES has better prognosis than primary bone or soft tissue ES with a survival rate of 91% in 10 years. The presence of metastasis is really rare. Currently, no specific recommendations to primitively cutaneous Ewing tumors, these latter are treated as bone Ewing's sarcomas: neoadjuvant chemotherapy, surgery, adjuvant chemotherapy (+/− radiotherapy), and autologous bone marrow transplantation in high risk patients. We report a new case in a 20-yearold female with a lesion in the left elbow.