4Dickman PS, Triche TJ, Extraosseous Ewing's sarcoma versus primitive rhabdomyosarcoma: diagnostic criteria and clinical correlation[J]. Hum Pathol, 1986,17 : 881.
5Mukhopadhyay P, Gairola M, Sharma MC, et al. Primary spinal epidural ex traosseous Ewin's sarcoma: Report of five cases and literature review[J]. Australasian Radiology, 2001,45 : 372.
6Meyer WH, Kun L, Marina N, et al. Ifosphamide pule etoposide in newly diagnosed Ewing,s sarcoma of bone[J].J Clin Oncol, 1992,10(1):737.
7Ferrari S, Mercuri M, Rosito P, et al. Ifosphamide aactinomycin-D added in the induction phase to vincristine, cyclophosphamide and doxor ubicin, improve histologic response and prognosis in patients with nin metastatic Ewing's sarcoma of the extremity[J]. J Chemother, 1998, (10): 484.
8Khoury JD,Ewing's sarcoma family of tumors.Adv Anat Path ol, 2005,12(4): 212-220.
