Endometriosis can lead to a number of diseases and the symptoms vary slightly from one disease to another. The main diseases caused by endometriosis are endometrial polyps, atypical hyperplasia of the endometrium and endometrial cancer. 1. Endometrial polyps: Patients with endometrial polyps may not have obvious clinical symptoms, but may also have symptoms such as increased menstrual flow, prolonged menstrual period and irregular vaginal bleeding. 2. Endometrial atypical hyperplasia: endometrial atypical hyperplasia, the symptoms are more varied, the specific symptoms vary from person to person. Some patients may have irregular bleeding, heavy menstruation, prolonged menstrual period, etc. Some patients may have no obvious symptoms or only show thickening of endometrium, infertility, amenorrhea, etc. 3. Endometrial cancer: The main symptoms of endometrial cancer are irregular vaginal bleeding, irregular menstruation, vaginal discharge or lower abdominal pain, and some patients may also have abdominal mass which is painful to touch. If the above symptoms occur, it may be caused by endometrial lesions, and it is recommended to go to the hospital in time to find out the cause of the disease and then treat the symptoms.