What is a rare form of abnormal placenta implantation known as?

Placenta increta is characterized by the abnormal invasion of the placenta into the uterine wall. This condition occurs when the placental villi penetrate deeper into the myometrium compared to a normal implantation. It is considered a rare and more severe form of placental implantation abnormalities, the most common being placenta accreta, where the placenta attaches too firmly to the uterine wall without invading. Increta then takes this a step further, creating a risk for complications such as hemorrhage during delivery.

Conditions like placenta previa, where the placenta is located at the lower segment of the uterus and covers the cervical opening, and placenta percreta, where the placenta penetrates through the uterine wall into adjacent organs, are related but distinct from increta in terms of their pathophysiology and clinical implications. Understanding these distinctions is crucial in maternal care and managing potential health risks.