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What is proliferative endometrium?

I have several questions about my reproductive system: What does it mean that an endometrium is proliferating? What is the enometrium? And what does it mean when your endometrium is proliferating in a ""disordered"" way. How serious is this?
These are great questions to discuss with your gynecologist in person. The endometrium is the lining of the uterus. It provides a fertile environment for a fetus to implant. Menstruation is the monthly shedding of the old endometrium, so that it can be replaced with a fresh layer that is optimal for a new fetus to have the opportunity to implant. The menstrual cycle consists of two phases. The first phase, under the influence of estrogen, is a proliferative phase. In other words, estrogen stimulates the endometrium to grow and thicken. While under this influence of the estrogen, the endometrium is called "proliferative endometrium," because the cells are multiplying and the tissue is growing. Once ovulation occurs (and an egg is available to be fertilized), your body secretes progesterone, which matures the endometrium and makes it the ideal hospitable environment for the fertilized egg to implant. During this phase, the endometrium is called "secretory endometrium." Unfortunately, the word "disordered" is not a precise medical term, so it is difficult to tell you exactly what is meant by the word or how serious the situation is. If the endometrium is proliferating too fast, or beyond the limits of normal growth, it could mean that the cells are on their way to becoming cancer. If the proliferation is not organized properly, and not providing the appropriate supportive environment for a fertilized egg, this could be cited as a reason for infertility. Unfortunately, it is impossible to tell what exactly was meant by the word "disordered." The best thing to do is talk with your doctor. S/he should be able to tell you what exactly is wrong, and knows your history well enough to give you more specific answers.

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