[Placentary chorangio-leiomyoma]

Chorangiomas are the most common non-trophoblastic tumors, generally appearing as incidental findings at the moment of delivery. The presence of leiomyomas inside placental parenchyma has been also described sporadically. In these cases, leiomyomas were primary maternal uterine neoplasms incorporated into the placenta during pregnancy. This case report presents a very unusual case of mesenchymal lesion, located in the fetal surface of the placenta, characterized by combined histopathologic and immunohistochemical features of chorangioma and leiomyoma. A single case reported with these characteristics was found in the international scientific literature, named as "chorangioleiomyoma". To our knowledge, this is the first case reported in our country.