embryoma
/ˌɛmbrɪˈəʊmə/Pathology
noun
Any neoplasm derived (or thought to be derived) from embryonic cells or tissues.
- Originally often synonymous with teratoma; later usually reserved for a type of tumour, typically occurring early in life and often malignant, composed of cells resembling the embryonic cells of the organ in which the tumour arises, such as Wilms' tumour (nephroblastoma), retinoblastoma, etc..
Origin
Late 19th century. From embryo + -oma, after French embryome.