Fig. 2

Amniotic sac containing the amniotic fluid without any fetal structures or umbilical cord herniated from a defect in the right uterine cornual into the peritoneal cavity. a Ultrasound imaging at 22 weeks gestation; b MRI imaging at 22 weeks gestation; c Ultrasound imaging at 32 weeks gestation; d MRI imaging at 32 weeks gestation. Arrow illustrates herniated amniotic sac, triangle illustrates uterine wall defect