Fig. 1

a A pelvic MRI was performed at 35 weeks of gestation. Red arrow indicates the loss of uterine myometrium between the placenta and the bladder wall. Based these findings, we suspected placenta percreta with bladder involvement. b and c, intraoperative findings revealed that placenta percreta involved the bladder and approached the pelvic sidewall and filled the cul de sac. White arrow indicates strong adhesion between the placenta and bladder