Ultrasound image of gestational sac with yolk sac but no embryo
Ultrasound image of gestational sac with yolk sac but no embryo
(A) The image shows a mean gestational sac of 7 mm. (B) The image shows the yolk sac within the gestational sac (arrow). It is too early in pregnancy to see an embryo. Repeat ultrasound in 7 to 10 days is reasonable to confirm pregnancy viability.