Increase in Type I. Apparently thick endometrium or endometrial hyperplasia increaeses risk for type I endometrial cancer. These occur in pre and peri-menopausal women, frequently with unopposed estrogen exposure. However, they are minimally invasive into the uterine wall, are of a low grade endometrioid type, and have a good prognosis.
Don't know, but. It is important to determine if and why your endometrial lining is thicker than normal. A thick endometrium is not a cause of cancer, but may be due to cancer. Endometrial cancer is much more common in post-menopausal women. Why was the thickness of your endometrium determined? Are you having any symptoms? What has your gynecologist told you?