Neuroectodermal neoplasm

A neuroectodermal neoplasm is a neoplasm or tumor of the neuroectoderm. They are most commonly tumors in the central or peripheral nervous system.^{[citation needed]}

Tumors exhibiting neuroectodermal differentiation are classified into two main groups:

• 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 melanoma, olfactory neuroblastoma, and Ewing's sarcoma.

References

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