1. Identifying risk factors for recurrent cesarean scar pregnancy: a case-control study 
Zhi-Da Qian, M.D., Qing-Yun Guo, M.D., Li-Li Huang, M.D. 
Fertility and Sterility 
Volume 102, Issue 1, Pages e1 (July 2014)
DOI: /j.fertnstert
Copyright © 2014 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Ultrasonography showing a particularly large disruption of the cesarean scar in a patient with recurrent cesarean scar pregnancy after surgery (arrow). CX = cervix; F = fundal endometrial cavity.
Fertility and Sterility  , e1DOI: ( /j.fertnstert )
Copyright © 2014 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2
Cesarean scar pregnancies demonstrated by ultrasound showing the gestational sac implanted in the lower segment dehiscence of the anterior myometrium. CX = cervix; F = fundal endometrial cavity. (A) The residual myometrium was thin and the amniotic sac bulged into the uterovesical fold under the cesarean scar (arrow). (B) The gestational sac was generally located in the lower uterine cavity, and only the inferior part was implanted in the cesarean scar (arrow).
Fertility and Sterility  , e1DOI: ( /j.fertnstert )
Copyright © 2014 American Society for Reproductive Medicine Terms and Conditions

4. Supplemental Figure 1
Magnetic resonance image (MRI) of a cesarean scar pregnancy (CSP). The sagittal T2-MRI shows a 4.8 × 5.6 × 5.0 cm heterogeneous mass within the lower segment of the anterior uterine wall (arrow). The markedly thinned myometrium between the mass and the urinary bladder was indicative of a CSP.
Fertility and Sterility  , e1DOI: ( /j.fertnstert )
Copyright © 2014 American Society for Reproductive Medicine Terms and Conditions