Hydatidiform Mole, Invasive

**Definition:** A uterine tumor derived from persistent gestational TROPHOBLASTS, most likely after a molar pregnancy (HYDATIDIFORM MOLE). Invasive hyadatiform mole develops in about 15% of patients after evacuation of a complete mole and less frequently after other types of gestation. It may perforate the MYOMETRIUM and erode uterine vessels causing hemorrhage.

**Tree numbers:** - C04.557.465.955.416.812.500 - C04.850.908.416.750.500 - C12.050.703.720.949.416.875.500

**Synonyms:** - Chorioadenoma - Invasive Mole