Endometrial thickness

The endometrium is the inner lining of the uterus which is mostly made from mucosal tissue. The outer layer of the endometrium is quite thin and attaches to the myometrium. The inner layer varies in thickness in response to the hormones which control the menstrual cycle. This inner layer is where a fertilized egg will implant if conception takes place. The appearance, as well as the thickness of the endometrium will vary based on whether the patient is pre-menstrual, of reproductive age, postmenopausal, on hormone therapy or birth control. For those of reproductive age, the stage of the menstrual cycle will also affect the endometrial thickness.