What is the normal thickness of the endometrium?

Thin endometrium is a problem that women need to pay attention to, because the endometrium will have adverse effects on women's reproductive health. The normal thickness of the uterus should be between 5 and 10 mm, so we must pay attention to observe whether it is normal or not.

1. Generally, the thickness of normal endometrium ranges from 5 to 10 mm. The thickness of endometrium varies in different periods: 1. The thickness of endometrium in proliferative period is about 9 to 10 mm. 2 During the secretory phase, the thickness of the endometrium is about 5 to 6 mm. 3 Menstrual period: The thickness of the endometrium can reach 8-10mm. The thickness of the endometrium changes with the cyclical changes of the ovaries. From the 5th day of the menstrual cycle, the endometrium is in the proliferative phase, and the endometrium continues to thicken until the 14th day of menstruation, and can thicken to 3-4mm; in the second half of the menstrual cycle, the endometrium is in the secretory phase, but it continues to thicken, and the endometrial thickness can reach 10mm before menstruation. Under normal circumstances, the thickness of a woman's endometrium is 8-12 mm, and the minimum cannot be less than 6 mm. Generally speaking, the thickness of the endometrium is about 10mm just after pregnancy. Experts point out that the thickness of the endometrium that is conducive to conception is about 8 mm. The best time for the endometrium to be fertile is during the luteal phase.

2. Anovulation: Anovulation may occur in adolescent girls, perimenopausal women, disorders in a certain link of the hypothalamus-pituitary-ovarian axis, polycystic ovary syndrome, etc., causing the endometrium to be continuously affected by estrogen for a longer period of time, without progesterone to counteract it, lacking the transformation of the cyclical secretory phase, and being in a state of hyperplasia for a long time. In patients with atypical endometrial hyperplasia under the age of 40, except for focal atypical hyperplasia, more than 80% of the other endometrium has no secretory phase; 70% of the basal body temperature measurement results are monophasic. Therefore, most patients do not ovulate.

3. Obesity: In obese women, androstenedione secreted by the adrenal glands is converted into estrone by aromatase in adipose tissue. The more adipose tissue there is, the stronger the conversion capacity is, and the higher the estrone level in the plasma is, thus causing a persistent estrogen effect.

4. Endocrine functional tumors: Endocrine functional tumors are rare tumors, but in research statistics, endocrine functional tumors account for 7.5%. The gonadotropin function of the pituitary gland is abnormal, and ovarian granulosa cell tumor is also a tumor that continuously secretes estrogen.