There are two basic types of gestational trophoblastic disease: molar pregnancy and gestational trophoblastic neoplasia, which is a form of cancer.
Molar Pregnancy
The most common form of the disease occurs during pregnancy. It involves slow-growing, non-cancerous tumors in your uterus, which are typically surgically removed. During a molar pregnancy, fetal tissue may not develop or may not develop completely.
Gestational Trophoblastic Neoplasia
Sometimes the tumors that form are cancerous and have the potential to spread to other organs. This form of gestational trophoblastic disease can occur after a miscarriage or delivery of a healthy baby.Treatments vary and may include surgery and/or chemotherapy.