Polyembryoma

Polyembryoma is a rare type of germ cell tumour that is typically seen as a component of a mixed germ cell tumour.

General

• Poor prognosis.
• Almost never in pure form, i.e. usu. a component of a mixed germ cell tumour.

Microscopic

Features:

• Disc shaped structure (embryo-like) with:
  • The one side endoderm.
    • Skin/CNS.
  • The other side ectoderm.
    • Internal organs - GI tract.

Images:

• Polyembryoma - low mag. (webpathology.com).
• Polyembryoma - high mag. (webpathology.com).

See also

• Germ cell tumours.