Endometrial hyperplasia is a condition in which the lining of your womb, the endometrium, becomes too thick. During your menstrual cycle, your endometrium changes. The estrogen that your ovaries ...

The uterus lining grows and thickens throughout the menstrual cycle to help prepare the uterus for pregnancy. When pregnancy does not occur, the uterine lining sheds, signaling the start of your ...