Ewing sarcoma - extraskeletal

Discussion:

Ewing's sarcoma is a malignant, aggressive, relatively frequent tumor that occurs predominantly in adolescent age, affecting the metadiaphyseal layer of bone, occasionally with intramedullary extension.

Within the Ewing family of tumors is the variety of soft tissue involvement that manifests radiologically as a heterogeneous mass of extraskeletal extension, which generally does not affect bone tissue, although occasionally it can cause erosion or periosteal reaction due to mass effect on the bone structure.

Clinically, if it is in relation to the spinal column, as in this case, it is presacral in location. it can manifest as radicular pain, bladder or intestinal dysfunction.

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