My OB-GYN says I have a yolk sac and a cyst. What is a yolk sac?

Answer by  rosefire (78)

A yolk sac normally appears in the 5th weak of pregnancy and is about 6 mm. If you are pregnant, having a yolk sac is very normal. Having a cyst at during early pregnancy is also normal. The yolk sac is a membrane that keeps the embryo alive-- It is the circulatory system until the heart forms and provides nourishment.

Answer by  nursepractitionerlisa (793)

Monthly your ovary emits an egg covered in eggshell. The eggshell gets left behind during ovulation and the body dissolves it. The yolk sac, or eggshell, has not yet dissolved.

Answer by  Cbuscemi (6)

A Yolk Sac is very common during pregnancy in many types of fish and in humans. It is a form of nourishment and is normally detected early in a pregnancy. A yolk sac is very common and is nothing to worry about.

Answer by  primatefreak (1616)

A yolk sac is normal. It's the first element seen during ultrasound at about 5 weeks of pregnancy. It identifies a true gestation sac.