Abstract:Ewing sarcoma (EWS) is a primary bone tumor that most often occurs in the long bones of young patients. EWS is typically an aggressive tumor that is highly sensitive to radiation therapy; recurrences often occur, usually within a year of treatment. We present a case of EWS that first presented in a patient at the age of 40 with extraosseous disease. The patient was treated initially with radiation and surgery. Over the following 36-year period, the tumor recurred once and metastasized twice. The morphologic, i… Show more
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