Neuroectodermal neoplasm

Neuroectodermal tumor

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

1. ↑ Neuroectodermal tumor entry in the public domain NCI Dictionary of Cancer Terms
2. ↑ Mills, Stacey E (2002). "Neuroectodermal Neoplasms of the Head and Neck with Emphasis on Neuroendocrine Carcinomas". Modern Pathology 15 (3): 264–278. doi:10.1038/modpathol.3880522. ISSN 0893-3952. PMID 11904342.

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