Ovary tumor
Germ cell tumors
Polyembryoma

Reviewers: Shahrzad Ehdaivand, M.D. (see Authors page)

Revised: 25 April 2016, last major update December 2012

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PubMed Search: Polyembryoma ovarian
Definition / General
  • Embryonal carcinoma composed primarily of embryoid bodies
  • Embryoid body has amniotic cavity-like structure and is continuous with intestinal duct, and rarely has squamous cell nests, while "yolk sac" is continuous with hepatic tissue
  • Embryoid body is not considered to be a real or teratomatous embryo, but a product of divergent differentiation into intestine and liver from the plastic epithelium, which seems to be derived from embryonic gut (Hum Pathol 1988;19:1144)
  • Micro Images

    Images hosted on PathOut server:

    Several embryoid bodies in
    different stages of development



    Images hosted on other servers:

    Mixed germ cell tumor : polyembryoma pattern