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Ewing sarcoma



Tumor Location

Primary sites of Ewing sarcoma (ES) are almost evenly spread between the extremities and the central axis.

The bones of the pelvis, the femur and the humerus are most frequently involved. 


In the extremities:

  • 20-30% of tumors are proximal
  • 30-40% are distal
  • 40% or so of ES occur in the lower extremities 


Location of Ewing sarcomas (ES):

Location of Primary Site

Proportion of Tumors



Chest wall


Spine or Paravertebral area

5 - 10%

Skull/Head and neck

2 - 5%








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