Invasive hydatidiform mole

Invasive hydatidiform mole, is a type of neoplasia that grows into the muscular wall of the uterus. It is formed after conception (fertilization of an egg by a sperm). It may spread to other parts of the body, such as the vagina, vulva, and lung. Invasive hydatidiform mole, is a type of neoplasia that grows into the muscular wall of the uterus. It is formed after conception (fertilization of an egg by a sperm). It may spread to other parts of the body, such as the vagina, vulva, and lung.  This article incorporates public domain material from the U.S. National Cancer Institute document 'Dictionary of Cancer Terms'.