3Dick EA, McHugh K, Kimber C, et al. Imaging of Non-Central Nervous System Primitive Neuroectodermal Tumours:Diagnostic Features and Correlation with Outcome[J]. Clin Radiol, 2001,56(3) :206-215.
4Kimber C,Michalski A,Spitz L,et al. Primitive Neuroectodermal Tumours: Anatomic Location, Extent of Surgery, and Outcome[J]. J Pediatr Surg, 1998,33(1) .39-41.
5Pickuth D, Leutloff U. Computed Tomography and Magnetic Resonance Imaging Findings in Primitive Neuroectodermal Tumours in Adults[J]. Br J Radiol,1996,69(817) :1-5.