Endometrial thickness is the thickness of the lining of the uterus measured during an ultrasound examination. An endometrial thickness of 25mm means that the endometrium is thickened. There are physiologic and pathologic causes of endometrial thickening.
1. Physiological reasons: After pregnancy, the endometrium will thicken due to the effect of estrogen and progesterone, which is normal.
2. Pathological causes: endometrial polyps, endometrial cancer and other diseases, or long-term use of estrogen drugs, etc., may also lead to endometrial thickening. At this time, if the endometrium is 25mm thick, it is abnormal.
Normal endometrial thickness is 5~10mm, but the thickness of endometrial lining changes with the cycle of ovaries, so the thickness will be different in different menstrual cycles.
The thickness of endometrium is the thinnest during menstruation. In the proliferative phase after the end of menstruation, the endometrium gradually thickens due to hormones, and the thickness is about 8~10mm, and in the secretory phase, the thickness of endometrium is about 10~12mm.
Therefore, when endometrial thickening is detected, it is necessary to complete all the examinations under the guidance of a professional doctor to clarify the cause of the disease and follow the doctor’s advice to treat the symptoms as soon as possible.