A 6mm stone has a probability of being expelled if there is no urethral stricture; however, it is difficult to expel if it is combined with a urethral stricture that interferes with normal urination.
6mm ureteral stone is relatively small, if there is no urethral stricture and other conditions, and can be normal urination, the stone can usually be discharged.
However, if the ureteral stone is accompanied by urethral stricture, obstruction, inability to urinate normally, or urine flow is relatively small, it will be difficult to expel the stone in this case. In cases where there is back pain that is difficult to control or less urine, infection and fever, active surgery to remove the stone is recommended.
If ureteral stones are detected, regular review should be conducted to understand the development of the disease and the related progress, and lithotripsy treatment should be carried out as early as possible if the stones cannot be discharged on their own, so as to avoid delaying the condition and leading to abnormalities such as enlarging and increasing the number of stones.