Chorioepithelioma

Chorioepithelioma is a rare, benign (non-cancerous) tumor of the placenta. It usually develops during the first trimester of pregnancy and is characterized by the growth of abnormal cells in the chorionic villi, which are small finger-like projections found on the surface of the placenta. It is most commonly seen in twin pregnancies and is considered to be a form of gestational trophoblastic disease. Chorioepithelioma can cause a variety of symptoms, including vaginal bleeding, abdominal pain, and an enlarged uterus. If left untreated, it can cause preterm labor and delivery, miscarriage, or stillbirth. Treatment typically involves removal of the tumor, as well as monitoring of the pregnancy to ensure that it is progressing normally.