If uterine fibroids become malignant, they can increase significantly in size in a short period. Patients may feel a lump in the abdomen, and this lump grows rapidly and is tender to pressure. Additionally, there may be symptoms such as heavy menstrual bleeding, prolonged menstrual periods, and irregular vaginal bleeding, as well as pain in the lower abdomen. Other symptoms include compression effects such as frequent urination, urgency to urinate, and difficulty defecating. Therefore, it is necessary to re-examine uterine fibroids every six months to a year. If uterine fibroids are found to be growing rapidly, timely surgical treatment should be conducted to prevent malignant transformation.