Chorioangioma

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Chorioangioma

Chorioangioma (pronounced: kohr-ee-oh-an-jee-oh-muh) is a benign tumor that develops from the placenta during pregnancy. It is the most common non-trophoblastic tumor of the placenta, although it is relatively rare, occurring in approximately 1% of pregnancies.

Etymology

The term "chorioangioma" is derived from the Greek words "chorion" (meaning "membrane enclosing the fetus"), "angio" (meaning "vessel"), and "oma" (meaning "tumor"). Thus, it refers to a tumor of the blood vessels in the placental membrane.

Symptoms and Diagnosis

Chorioangioma can be asymptomatic, but larger tumors may cause complications such as polyhydramnios (excessive amniotic fluid), fetal anemia, preterm labor, and fetal growth restriction. Diagnosis is typically made through ultrasound imaging during pregnancy.

Treatment

Treatment for chorioangioma depends on the size of the tumor and the severity of the symptoms. Small, asymptomatic tumors may not require treatment. Larger tumors causing significant symptoms may require interventions such as amnioreduction (removal of excess amniotic fluid), fetal blood transfusion, or early delivery.

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