Gestational Trophoblastic Disease (GTD) is a group of rare conditions in which abnormal cells grow inside the uterus after conception. These conditions originate from the placental trophoblastic tissue and can range from benign to malignant. GTD includes several types, such as hydatidiform moles (partial and complete), invasive moles, choriocarcinoma, and placental-site trophoblastic tumors.
