A 15mm dilation of the female urinary tract is not normal. Most women’s urinary tracts are about 8mm in diameter, and if dilated to 15mm, it may damage the mucous membrane of the urinary tract, which can lead to bleeding and painful symptoms. If not treated as soon as possible, it may also cause infection or sphincter damage problems, so it is important to pay attention to it. Many causes can lead to urinary tract dilatation in women, such as congenital factors, ureteral stones, ureteral obstruction and so on. Therefore, when you find dilatation of the urinary tract, you should go to the hospital for examination, and then according to the cause of the disease, step by step treatment. Female urinary tract dilatation up to 15mm, patients with discomfort, need to consult a doctor for examination and early treatment.