目的探讨原始神经外胚层瘤（PNET）的病理学特点及其临床意义。
Objective To study the pathological characteristics of primitive neuroectodermal tumor(PNET) of bone and soft tissue.
结果神经鞘瘤14例，神经纤维瘤5例，恶性周围性神经鞘瘤（MP NST） 5例，原始神经外胚层瘤1例。
Results There were 14 schwannomas, 5 neurofibromas, 5 malignant peripheral nerve sheath tumors(MPNST), and 1 peripheral primitive neuroectodermal tumor.
它由星形细胞瘤，少突胶质细胞瘤，室管膜瘤发展而来，它们是由神经外胚层细胞诱导的。
It developed from astrocytoma, oligodendroglioma, ependymoma, which were induced by neural ectoblast.
结果提示：视网膜母细胞瘤来源于神经外胚层上皮，向神经元和光感受器方向分化。
The results suggested that retinoblastoma originated from the retinoblast with potential of differentiation into photoreceptors and neurons.
结果提示：视网膜母细胞瘤来源于神经外胚层上皮，向神经元和光感受器方向分化。
The results suggested that retinoblastoma originated from the retinoblast with potential of differentiation into photoreceptors and neurons.
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