[Large placental chorioangiomas: 2 case reports].

Two cases of large placental chorioangiomas are reported. These tumors gave rise to obstetric and neonatal complications with perinatal death in both cases. These rare tumors were discovered by pathological examination of the products of delivery, with their precise nature being identified histologically. Review of the literature shows that fetal, neonatal and obstetric consequences are multiple and can often be explained by placental and cardiac insufficiency in utero secondary to the presence of these vascular tumors.