. Metastatic Ewing's Sarcoma Humerus. OrthopaedicsOne Cases. In: OrthopaedicsOne - The Orthopaedic Knowledge Network. Created Jul 19, 2011 16:09. Last modified Jul 19, 2011 16:42 ver.4. Retrieved 2019-08-24, from https://www.orthopaedicsone.com/x/2YDKAw.
22 yr old male with previous chest wall Ewings sarcoma, treated with rib and chest wall excision after CTX. Did well until 5 months ago when he developed left arm pain and swelling.
Fusiform mass left humerus, neurovascular exam intact. No systemic symptoms.
Initial imaging studies are shown below
What is the differential diagnosis?
Diagnosis (Click to see answer)