Ear Nose Throat J. 2007 Feb;86(2):79-80.
FIRST PARAGRAPH: Ewing sarcoma (ES) and primitive neuroectodermal tumor (PNET) are closely related, high-grade, round-cell tumors with a neuroectodermal phenotype. These tumors are histologically considered on a morphologic spectrum, and they express similar genetic alterations. ES usually develops in bone and is more undifferentiated, while PNET tends to involve soft tissue and demonstrates more pronounced neuroendocrine features.
PubMed ID: 17385610
Article Size: <1 MB