Sonographic Evaluation of a Large Placental Chorangioma

Placental chorangioma is a rare, benign tumor of the placenta. Chorangiomas are typically small, are asymptomatic, and pose no threat to pregnancy. However, in extreme cases, large placental chorangiomas can cause maternal and fetal complications associated with poor outcomes and fetal demise. Prenatal sonography is an accurate method for diagnosing these benign tumors based on grayscale imaging and color Doppler assessment of intratumoral vascularity. Early diagnosis is critical in predicting the potential for subsequent maternal and fetal complications, planning sonographic surveillance, treating maternal symptoms, and delivery planning. This case study discusses the diagnosis and management of a large placental chorangioma in an otherwise uncomplicated pregnancy.