A tumor-like mass in the uterus that originates in and mimics a normal pregnancy. It is most common in Asian women. Typical signs of the condition are extreme nausea, uterine bleeding, the passage of grape-like masses of tissue, an unusually large womb for the expected length of pregnancy, absence of fetal heart sounds, and high blood pressure. Ultrasound scanning will confirm the diagnosis. The mole will then be removed and the gynecologist will conduct further examinations at regular intervals to make sure that all fragments have been removed. A check of gonadotropin hormone is important. The serious risk with a "molar pregnancy" is that the growth may be malignant, or become so. It is recommended that a one-year waiting period be observed before trying to conceive again.