Diseases that may arise from thick endometrium: 1. Anovulatory uterine bleeding, which occurs in adolescent and perimenopausal women. Because there is no antagonism of progesterone in the body, estrogen stimulates the endometrium for a long time, which will make the endometrial thickening manifest as irregular vaginal bleeding and even lead to anemia in patients. 2. Atypical hyperplasia of the endometrium and endometrial cancer may occur in patients with atypical hyperplasia of the endometrium and endometrial cancer because the endometrial tissue has undergone malignant transformation, so the endometrial tissue will proliferate abnormally and manifest as Endometrial thickening. 3, may lead to endometrial polyps, when the endometrium localized polyp-like hyperplasia, then it may also be manifested as endometrial thickening, the above are common diseases.