[Placenta previa-accreta: a singular problem. A report of two cases and bibliographic review].

Placenta previa in women older than 34 years old with previous cesarean section has a high risk to develop placenta accreta/inccreta/perccreta. Such background is frequent nowadays, so placenta previa-accreta is a growing problem. This disease cause hypervascularity in the pelvic floor and increases the risk of placenta penetrating the bladder. For these peculiarities, the maternal morbidity and mortality are higher; besides, hysterectomy produces additional morbidity and mortality. For such reasons, experts explore at present other alternatives to be able to make a better maternal prognosis. In this article we report two cases with placenta previa-accreta, and make a review of medical literature about this topic.