1Guillou L, Coindre JM, Bonichon F, et al. Comparative study of the National Cancer Institute and French Federation of Cancer Centers Sarcoma Group grading systems in a population of 410 adult patients with soft tissue sarcoma[J]. J Clin Oncol, 1997,15 (1) :350-362.
9Wong WW, Hirose T, Scheithauer BW, et al. Malignant Peripherial Nerve Sheath Tumour: Analysis of Treatment Outcome. Int J Radiat Oncol Biol Phys,1998, 42(2) : 351 -360.
10Wanebo JE, Malik JM, Vandenberg SR, et al. Malignant peripheral nerve sheath tumors. A clinico - pathological study of 28 cases. Cancer, 1993, 71 (4) : 147 - 153.