Placenta accrete is an increasingly prevalent and potentially dangerous complication of pregnancy. It appears to be most strongly predicted by a history of cesarean deliveries and low-lying placenta/previa. Additional risk factors include in vitro fertilization pregnancy, prior myomectomy, Asherman's syndrome, submucous leiomyomata, maternal age older than 35 years, elevated second-trimester levels of α-fetoprotein and β-human chorionic gonadotropin.