Gestational trophoblastic tumor. Definition

Medical Definition: Gestational trophoblastic tumor

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

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