]> embryonal neoplasm EFO:0005784 UMLS:C0027654 MEDGEN:45034 DOID:688 ONCOTREE:EMBT NCIT:C3264 embryonal neoplasm embryonal tumor embryonal tumour EMBT MONDO:0005564 A usually malignant neoplasm composed of primitive (immature) tissues that resemble fetal tissues. Medulloblastoma, Ependymoblastoma, Pineoblastoma, and Wilms tumor are representative embryonal neoplasms. --2003 neoplasm