Testis and epididymis
Germ cell tumors

Author: Turki Al-Hussain, M.D. (see Authors page)

Revised: 20 July 2017, last major update January 2013

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PubMed Search: Testis polyembryoma

Cite this page: Polyembryoma. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/testispolyembryoma.html. Accessed August 20th, 2017.
Definition / general
  • Mixed germ cell tumor with multiple embryoid bodies (central core of embryonal carcinoma cells, amnion-like cavity and yolk sac tumor component)
  • Elements other than the embryoid bodies, however, should constitute less than 10% of the tumor for the 'polyembryoma' designation to be used (Mod Pathol 2005;18:S61)
  • Resembles embryonic yolk sac
  • Behaves like other mixed germ cell tumors
Microscopic (histologic) images

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Various images