Young adult treated for leukemia as a preschooler, now with new palpable sternal mass

CT of epithelioid sarcoma with pulmonary metastases
Axial CT without contrast of the chest with soft tissue (above) and lung (below) windows shows a heterogeneous mass contiguous with the rectus muscles and anterior to the lower sternum which appears to be eroding into the sternum along with multiple peripheral pulmonary soft tissue nodules.

The diagnosis was epithelioid sarcoma with pulmonary metastases.