Why is it easy for the uterus to grow fibroids during pregnancy? Why does uterine fibroids occur during pregnancy?

Why is it easy for the uterus to grow fibroids during pregnancy? Why does uterine fibroids occur during pregnancy?

Pregnancy is every woman's dream and expectation, but sometimes you may encounter some pregnancy complications, such as uterine fibroids. Uterine fibroids are a common gynecological disease that mainly occurs in women of childbearing age and is particularly prone to occur during pregnancy. Why is it easy for pregnant women to have uterine fibroids? The following will explain from several aspects.

1. Changes in hormone levels: During pregnancy, the hormone levels in women change dramatically. In particular, the level of estrogen is extremely high, which can cause the thickening and proliferation of the endometrium. Uterine fibroids are non-malignant tumors that originate from uterine smooth muscle, and these smooth muscle cells proliferate under the action of hormones. Therefore, changes in hormone levels during pregnancy provide favorable conditions for the occurrence of uterine fibroids.

2. Increased uterine blood flow: During pregnancy, the blood flow to the uterus increases significantly to meet the nutritional needs of the fetus. However, this increased blood flow can exacerbate the growth of uterine fibroids. Uterine fibroids occur due to abnormal proliferation of uterine smooth muscle, and the increased blood supply provides more oxygen and nutrients to the tumor, thereby promoting tumor growth.

3. Increased size of the uterus: During pregnancy, the size of the uterus increases rapidly, changing from a pear shape to a spherical shape. This rapid increase in size may limit the blood supply to the uterine fibroids, leading to ischemic necrosis of the tumor. In addition, the increase in the size of the uterus may also change the position of the uterine fibroids and fuse with the wall of the uterus, making it more difficult to separate and remove.

4. Estrogen dependence of uterine fibroids: The growth process of uterine fibroids is closely related to the influence of estrogen. During pregnancy, the estrogen level in women's bodies is extremely high, which provides extremely favorable conditions for the growth of uterine fibroids. In the early stages of pregnancy, the size of uterine fibroids can continue to grow with the increase in hormone levels until it reaches a certain size.

In summary, the reason why pregnant uterus is prone to fibroids is mainly due to the combined effects of factors such as changes in hormone levels during pregnancy, increased uterine blood flow, increased uterine volume, and estrogen dependence of uterine fibroids. Therefore, for women with uterine fibroids during pregnancy, it is necessary to pay special attention to the growth of the tumor and monitor its size and position changes in a timely manner. If the tumor grows abnormally or causes other complications, it is recommended to seek medical attention in time and receive appropriate treatment. At the same time, you should actively undergo a physical examination before pregnancy to rule out diseases such as fibroids to ensure a safe and healthy pregnancy.