Neuroectodermal neoplasm
Medical condition
Neuroectodermal tumor | |
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Specialty | Oncology |
A neuroectodermal neoplasm is a neoplasm or tumor of the neuroectoderm.[1] They are most commonly tumors in the central or peripheral nervous system.[citation needed]
Tumors exhibiting neuroectodermal differentiation are classified into two main groups:[2]
- Group I tumors/neoplasms: neuroendocrine carcinomas. These show predominantly epithelial differentiation. They include pituitary adenoma and carcinoid tumor
- Group II tumors/neoplasms: nonepithelial neuroectodermal neoplasms. These are predominantly neural in origin. They include malignant melanoma, olfactory neuroblastoma and Ewing's sarcoma.
References
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Tumours of the nervous system
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Other: |
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Neuroepithelial (brain tumors, spinal tumors) |
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Meninges | |||||||||||||||||
Hematopoietic |
Note: Not all brain tumors are of nervous tissue, and not all nervous tissue tumors are in the brain (see brain metastasis).
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