A Large Placental Chorioangioma without an Adverse Perinatal Effect

Chorioangiomas are the most common benign tumors of placenta with reported prevalence of approximately 0.5% -1%. Large tumors are rare but those exceeding 5 cm in diameter may be associated with adverse effects on both mother and fetus. The larger the size of the tumor the more is the chance of developing complications. However, it is not necessary that complications would always ensue. Here, we present a case with a large asymptomatic placental chorioangioma that was found incidentally at term and led to a successful outcome. Despite the large size, it was not associated with the maternal or fetal complications expected with a chorioangioma of that size.