Description:
A rare
          condition in which abnormal cells grow inside the uterus
          from tissue that forms after conception (the joining of
          sperm and egg). This tissue is made of trophoblastic cells,
          which normally surround the fertilized egg in the uterus
          and help connect the fertilized egg to the wall of the
          uterus. These cells also form part of the placenta (the
          organ that passes nutrients from the mother to the fetus).
          Most gestational trophoblastic tumors are benign (not
          cancer) and do not spread, but some types are malignant
          (cancer) and spread to nearby tissues or other parts of the
          body. The two main types of gestational trophoblastic tumors
          are hydatidiform mole and choriocarcinoma. Also called gestational trophoblastic disease, GTD, and GTT.


