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Neuroectodermal Tumors, Primitive

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Definition: A group of malignant tumors of the nervous system that feature primitive cells with elements of neuronal and/or glial differentiation. Use of this term is limited by some authors to central nervous system tumors and others include neoplasms of similar origin which arise extracranially (i.e., NEUROECTODERMAL TUMORS, PRIMITIVE, PERIPHERAL). This term is also occasionally used as a synonym for MEDULLOBLASTOMA. In general, these tumors arise in the first decade of life and tend to be highly malignant. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, p2059)  coord IM with BRAIN NEOPLASMS (IM) or specific precoord organ/neopl term (IM); do not confuse with MEDULLOBLASTOMA   
Examples Medulloblastoma; Neuroectodermal Tumors, Primitive, Peripheral 		Other names Primitive Neuroepithelial Neoplasm; Primitive Neuroectodermal Tumors; Primitive Neuroectodermal Tumor; Neuroepithelial Tumor, Primitive; Neuroepithelial Neoplasm, Primitive; Neoplasm, Primitive Neuroepithelial; Medulloepitheliomas; Ependymoblastomas; Primitive Neuroepithelial Neoplasms; Neuroepithelial Neoplasms, Primitive; Neuroectodermal Tumor, Primitive; Neoplasms, Primitive Neuroepithelial; Cerebral Primitive Neuroectodermal Tumor; Spongioblastoma; PNET; Neuroepithelial Tumors, Primitive; Medulloepithelioma; Ependymoblastoma; Tumors, Primitive Neuroepithelial; Tumors, Primitive Neuroectodermal

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