Immature teratoma

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Immature teratoma
Classification and external resources
Immature teratoma high mag.jpg
Micrograph of the primitive neuroepithelium of an immature teratoma. H&E stain.

An immature teratoma is a rare type of malignant (cancerous) germ cell tumor (type of tumor that begins in the cells that give rise to sperm or eggs).

Like a mature teratoma, it contains several different types of tissue such as hair, muscle, and bone. Unlike a mature teratoma, it contains primitive neuroepithelium.

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 This article incorporates public domain material from the U.S. National Cancer Institute document "Dictionary of Cancer Terms".