[Giant placental chorioangioma].

The large placental chorioangioma is a non-trophoblastic vascular tumor of placenta which size is more than 4 cm. It's a 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 ultrasonography aspects of this tumor: we bring out also the physiological mechanisms of maternal and fetal complications and finally we detail the therapeutic possibilities.

[Fetal cystic hygroma antenatal diagnosis. Prognosis and management].

Fetal cystic hygroma is a rare congenital malformation. The incidence of this pathology is 1/700 pregnancies. This malformation can be seen at antenatal ultrasonography from the end of the first trimester of pregnancy.