Mom to be incomplete. The larvae of the baby and the placenta does not grow normally. Tissues of the embryo into the uterus of a deadly type of tumor is generally placenta to transport nutrients to the fetus. Including waste out. If the cells that build the placenta malfunctions after the eggs fertilized with sperm and then. To cause ovarian cyst or cysts. Which looks like a bunch of grapes or white eggs. Such cells to grow inside the uterus instead of rapid growth as babies are called molar pregnancy. Although molar pregnancy is not deadly tumors. It is considered a pre-cancer or cancer of cancer Molar meat placenta (Gestational Trophoblastic Disease)