gestational trophoblastic tumor

Definition / meaning of gestational trophoblastic tumor

Any of a group of tumors that develops from trophoblastic cells (cells that help an embryo attach to the uterus and help form the placenta) after fertilization of an egg by a sperm. The two main types of gestational trophoblastic tumors are hydatidiform mole and choriocarcinoma. Also called gestational trophoblastic disease.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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