The most common symptoms of submucosal fibroids are increased menstrual flow and prolonged periods. Submucosal fibroids can increase the area of the endometrium, and the fibroids can also cause the veins near the tumor to be compressed, resulting in congestion and expansion of the venous plexus of the endometrium, which can cause increased menstrual flow and prolonged periods. When submucosal fibroids are accompanied by necrosis and infection, they are often accompanied by irregular vaginal bleeding and blood-like purulent discharge. Long-term increased menstrual flow can lead to anemia, weakness and palpitations, and increased leucorrhea, mainly due to the increased area of the uterine cavity and increased secretion of endometrial glands caused by fibroids. In case of infection, there can also be a large amount of purulent leucorrhea, and in case of ulceration, necrosis, or bleeding, there can be bloody or pus-filled vaginal fluid with a foul odor.