Neuroectodermal neoplasm
Medical condition
From Wikipedia, the free encyclopedia
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 melanoma, olfactory neuroblastoma, and Ewing's sarcoma.
