What is the cause of the enlarged yolk sac?

As we all know, pregnant women are the ones who need special attention in life. When pregnant, their belly will get bigger and bigger over time. When they have a big belly, many things in life are inconvenient to do, so family members should try their best to meet the requirements of pregnant women. Pregnant women need to check the fetus regularly after becoming pregnant, but some pregnant women find that their yolk sac is enlarged during the examination. What is going on?

Yolk sac: After the embryo develops body folds, the archenteron is clearly divided into the archenteron within the embryo and the yolk sac outside the embryo, which contains a large amount of yolk. The wall of the yolk sac is formed by the extraembryonic endoderm and extraembryonic mesoderm. At the end of the fifth week, the yolk sac of the human embryo is separated from the primitive gut and gradually degenerates. By the seventh week, it becomes a small sac with a diameter of less than 5 mm, remaining on the surface of the placenta. If your yolk sac enlarges after the fifth week, it may be a developmental abnormality and further examination is recommended. Yolk sac: After the embryo develops body folds, the archenteron is clearly divided into the archenteron inside the embryo and the yolk sac outside the embryo, which contains a large amount of yolk. The wall of the yolk sac is formed by the extraembryonic endoderm and extraembryonic mesoderm.

Double gestational sacs, one of which is a slightly larger yolk sac, with no obvious embryo. The yolk sac is 0.9 cm. B-ultrasound shows a double pregnancy, an early intrauterine pregnancy. It is recommended to have a B-ultrasound check once a week to understand the condition of the gestational sac. In the early stages, you should pay attention to rest and avoid sexual intercourse.

If a pregnant woman finds that her yolk sac is enlarged during her prenatal check-up, this is abnormal and you can consult a doctor. There are many reasons why the yolk sac is enlarged. It may be that there are no taboos on some foods or things during pregnancy, which leads to the enlargement of the yolk sac. Therefore, pregnant women must pay attention to rest and maintain a good attitude during pregnancy.