Ewing sarcoma

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09/10/23

key facts:
Typical presentation: ill-defined osteolytic lesion with a moth-eaten or permeative type of bone destruction, irregular cortical destruction and aggressive periostitis in the lower extremity of a child.
Plain radiographs usually illustrate the malignant nature.
Based on the age, the location and the radiographic appearance the diagnosis of Ewing sarcoma can be made in over 70% of cases.
In long bones, the tumor is most commonly located centrally in the meta- or diaphysis
MR imaging reveals the soft tissue extension.
Treatment of Ewing sarcoma consists of neoadjuvant chemotherapy, followed by surgical resection and adjuvant chemotherapy.The tumor also may respond to radiation therapy.