1. Ectopic pregnancy in a cesarean section scar
An-Jen Chiang, M.D., Victor La, B.A., Chen-Pin Chou, M.D., Peng-Hui Wang, M.D., Ph.D., Ken-Jen Yu, M.D., Ph.D. 
Fertility and Sterility 
Volume 95, Issue 7, Pages (June 2011)
DOI: /j.fertnstert
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
A gestational sac with a positive fetal heartbeat (crown–rump length: 17.9 mm) located in the thin lower-anterior wall of the uterus behind a previous cesarean section scar (arrow), as demonstrated via abdominal sonography.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2
Cesarean scar pregnancy (CSP) in a 42-year-old woman at 8+3 weeks’ gestation. The sagittal T2-weighted magnetic resonance image shows a gestational sac-like structure within the lower segment of the anterior uterine wall, corresponding to the caesarean scar (long arrow). The markedly thinned myometrium between the gestational sac-like structure and the urinary bladder was indicative of a CSP. The abdominal CS scar (short arrow) also is shown.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions

4. Figure 3
(A) The patient received hysteroscopy and sonar guided dilation and curettage to remove remaining any pathologically proven gestational tissue (black arrow). Her β-human chorionic gonadotropin (β-hCG) levels were monitored weekly and vaginal ultrasound was performed biweekly until her β-hCG levels returned to normal levels. (B) Histologic examination showing a cluster of trophoblast cells (short arrow) and uterine myometrial muscle bundles (long arrow) (stain: hematoxylin-eosin; magnification: ×200).
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions