Fig. 1.75: Twin pregnancy on Day 28. Dorsalty, a chister of mu)ople endometrial cysłs (Q can be seen. They can generate difficulties in diagnosmg a twin pregnancy. To ensure an ac-curate diagnosis the two embiyos (E) with the beating heart in each should be depicted.
Fig. 1.76: Twin pregnancy on Day 37. The two embiyon* yesicles appear to be fused. Two embryos are yisible.
Fig. 1.77: Twin pregnancy on Day 15. The veside on the left has the appropriate size in reiation to the serwce datę, where-as the one on the right is too smali.