Abstract
References
1.
Abeloff
M.D.
Armitage
J.O.
Niederhuber
J.E.
Clinical Oncology. 4th ed. Philadelphia : Elsevier Churchill Livingstone ; 2008 .
2.
Hurie
J.
Sariego
J.
Extraosseous Ewing sarcoma. Am Surg 2009 ; 75 : 1255 –7 .
3.NCCN Clinical Practice Guidelines in Oncology: Bone Cancer. 2. 2012. http://www.nccn.org