What is a normal endometrial?

A normal endometrium is the inner lining of the uterus, which undergoes cyclical changes in response to hormonal fluctuations during the menstrual cycle. In the proliferative phase, it thickens in preparation for potential implantation of a fertilized egg, while in the secretory phase, it becomes more vascular and glandular. If pregnancy does not occur, the endometrial lining is shed during menstruation. A healthy endometrial lining appears homogeneous on imaging and has a typical thickness that varies with the menstrual cycle phase.