Embryoma

{{Infobox medical condition (new)

| name = Embryooma

| synonyms = Embryonal tumor

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Embryoma is a mass of rapidly growing cells believed to originate in embryonic (fetal) tissue.{{DorlandsDict|three/000034638|embryoma}} Embryonal tumors may be benign or malignant, and include neuroblastomas and Wilms tumors. Also called embryoma. Embryomas have been defined as: "Adult neoplasms expressing one or more embryo-exclusive genes."{{cn|date=March 2018}}

Embryomas can appear in the lungs.{{cite journal | vauthors = Barnard WG | title = Embryoma of lungs | journal = Thorax | volume = 7 | issue = 4 | pages = 299–301 | date = December 1952 | pmid = 13015519 | pmc = 1019196 | doi = 10.1136/thx.7.4.299 }}

It is not a precise term, and it is not commonly used in modern medical literature. Embryomas have been defined as: "Adult neoplasms expressing one or more embryo-exclusive genes".{{cn|date=May 2021}}