Placenta accreta is a general term for patological invasion of trofoblast to the uterine wall. In current obstetrics, it is one of the most common indications of postpartum hysterectomy.
Recently the incidence increased from 1:7000 deliveries to 1:533 deliveries. This significant increase is probably due to higher number of caesarian sections and uterine operative interventions.
Maternal mortality can be up to 7%. Few theories of etiopathogenesis are known in the literature.
Firstly it can be a primary damage of trofoblast, which deeply invades to the myometrium. Alternatively, it can be a secondary defect of decidua basalis or it can also be a defect of reparation proceses in the surrounding tissue around the scar in the myometrium.