Adenomyosis may be related to basal cell hyperplasia, multiple surgeries and other causes. Adenomyosis mainly refers to the normal endometrial glands that enter the myometrium of the uterus, the main manifestations of which are prolonged menstrual period, excessive menstrual blood flow, and late menstrual bleeding. 1. Basal cell hyperplasia: If there is basal cell hyperplasia in the endometrium and the endometrium lacks submucosal layer, the myometrium will be lesioned. 2. Multiple surgeries: If the body has undergone multiple abortions, cesarean sections, or uterine surgery, it may cause damage to the basal layer of the endometrial lining, which may lead to the development of the disease. There may be other reasons for adenomyosis, so it is recommended that you go to the hospital in time for a complete examination to determine the cause of the disease and then give targeted treatment or therapy.