<prompt> Which is not a common cause of Placenta Accreta?Previous LSCSPrevious curettagePrevious myomectomyPrevious placenta preabrupto placenta  <response>: The basic cause of placenta accreta is decidual deficiency. Associated conditions include implantation in the lower uterine segment over a previous cesarean section scar or any other uterine incision,or after uterine curettage. Reference: Mudaliar and Menon;s clinical obstetrics,12th edition, page no;330. p 