case_images: PMC3205779_01
case_images: A gestational sac with a small embryonic pole with a fetal heartbeat of 122 bpm located in the cervix below the scar of the previous cesarean section (vertical arrow). Cervix was closed, enlarged, and tender (horizontal arrow). Estimated gestational age based on last menstrual period was 6 weeks and 6 days.
case_images: CRIM2011-858241.001.jpg
case_images: PMC3205779_01_CRIM2011-858241.001.jpg
case_images: fig1
case_images: Ultrasound was repeated five days later and showed the gestational sac in the cervical canal with a fetal heart rate of 122 beats per minute (Figure 1) and quantitative beta hCG was 10694 mLU/mL.