[Large placental chorioangioma]

ABSTRACT

The large placental chorioangioma is a non-trophoblastic vascular tumor of placenta which size is more than 4 cm. It's rare tumor, the incidence is between 1/3500 and 1/9000 birth. We analyze, on base of our case and from a literature review, the ultrasonic aspects of this tumor; we bring out also the physiological mechanisms of maternal and fetal complications and finally we detail the therapeutic possibilities. Chorioangioma appears in ultrasound scan like a thoroughly limited hypoechogene zone. The vascular origin of the tumor can be confirmed by color Doppler. A left-right shunt effect results from arterio-venous communications and causes backwardness growth and fetal death in-utero The fetus is exposed to anemia and microangiopathic thrombopenia The maternal complications are hydramnios, abruption placenta, premature ruptured membrane. Therapeutic possibilities are reduced In several fetal anemia, an exsanguinous transfusion can be done. Some techniques for tumor devascularization are be tried by someone