If the uterine fibroids are relatively small, they generally do not show symptoms. However, submucosal uterine fibroids, regardless of their size, can cause heavy menstrual bleeding and prolonged periods. Intramural uterine fibroids, if protruding into the uterine cavity, can also lead to heavy menstrual bleeding and prolonged periods. If the uterine fibroids are large and press against the bladder in front, symptoms such as frequent urination and urinary urgency can occur. If they press against the rectum in the back, it can lead to difficulty in defecation or a feeling of downward pain. Therefore, if symptoms are present with uterine fibroids, surgical treatment is necessary.