What is the normal thickness of the uterus?

When women reach middle age or have experienced multiple miscarriages, the thickness of their uterus will change. If the thickness of the uterus exceeds ten mm, it is not suitable for pregnancy, because if the endometrium is too thick, it is easy to cause miscarriage, and it also has a great impact on the development of the baby. This situation makes many middle-aged and elderly female friends feel very confused. These friends want to know, what is the normal thickness of the uterus?

The size of the uterus is usually measured by B-ultrasound. The length of an adult's uterus is about 60-7250m, the total width is about 40-5250m, and the thickness is about 30-4250m. Under normal circumstances, the sum of the three diameters of the mausoleum should exceed 12x250m. During pregnancy, the uterus will expand rapidly, the thickness of the uterus will become longer and softer, and before delivery, the thickness of the lower part of the uterus is only 5mm. But in adenomyosis or adenomyosis, the thickness of the uterus will increase continuously, and the echo will be uneven.

Causes of endometrial thickness

1. Anovulation: Anovulation may occur in adolescent girls, perimenopausal women, imbalance in a certain stage of the hypothalamic-pituitary-uterine-ovarian axis, polycystic ovary syndrome, etc., causing the uterine wall to be continuously affected by estrogen for a long time, without estrogen resistance, lack of regular metabolic phase transitions, and be in a state of hyperplasia for a long time.

2. Obesity: In obese women, androstenedione, metabolized by adrenaline, is converted into estrone by the action of aromatase in adipose tissue; the more adipose tissue there is, the stronger the conversion capacity is, and the higher the level of estrone in the blood is, thus causing a persistent estrogenic effect.

3. Endocrine multifunctional tumors: Endocrine multifunctional tumors are rare tumors, accounting for 7.5% of endocrine multifunctional tumors. The gonadotropin function of the pituitary gland is abnormal, and uterine and ovarian granulosa cell tumors are also tumors that continuously metabolize estrogen.

4. Simple hyperplasia of the uterine wall: The diseased uterus is slightly larger, the endometrium is significantly thickened, and sometimes appears diffusely polyp-like. The amount of curettage material is large and may be stained with bright red, smooth polyp-like tissue.

5. Complex hyperplasia of the uterine wall: The cause of complex hyperplasia is roughly similar to that of simple hyperplasia, but because the disease is localized, it may also be related to the distribution of growth hormone protein kinase in the tissue. A very small number of complex hyperplasia may develop into intestinal metaplasia, which in turn affects the prognosis.