3Beeker LE. Primitive Neuroectodermal Tumors View on a Working Classification. Primary Brain Tumors[M]. New York: Ed, By W. S. fields Springer Verlay. 1990. 59-69.
4Jaw TS, Kuo YT,Liu GC,et al. MR Cholangiography in the Evaluation of Neonatal Cholestasis[J]. Radiology, 1.999,212 ( 1 ) : 249- 256.
5Ladanyl M, Heinemann FS, Huvos AG, et al. Neural Differentiation in Small Round Cell Tumors of Bone and Soft Tissue with the Transloeation t ( 11;22 ) ( q24 ; q12 ) : an Immunohistochemical Study of 11 Cases[J]. Hum Pathol.1990,21(12):1245-1251.
6Dehner LP. Primitive Neuroectodemal Tumor and Ewing's Sarcoma [J]. Am J Surg Pathol, 1993.17(1): 1-3.
7Dick EA,Mchug HK,Kimber C,et al.Imaging of non-central nervous system primitive neuroectodermal tumors:Diagnostic features and correlation with outcome[J].Clin Radiol,2001,56 (3):206-215.
8[1]Grirer HE. The Ewing family of tumors. Ewing's sarcoma and primitive nruroectodermal tumors [J]. Pediatr Clin North Am, 1997,44(4):991～1004
9[2]Pauwels P, Ambros P, hattinger C, et al. Peripheral primitive neuroectodermal tumor of the cervix[J]. Mirchows Arch, 2000,436(1) :68～ 73
10[3]Gu M, Antonescn CR, Guiter G, et al. Cytokeratin immunohistotivity in Ewing's sarcoma::prevalence in 50 cases confirmed by molecular diagnostic studies [J]. Am J Surg Pathol,2000,24(3) :400～416
