1, causing stone obstruction, leading to a decline in renal function;
2, causing infections, the serious cases can be formed in renal pus, and severe urinary tract infections may also result in sepsis, the The infection can also cause sepsis, which is life-threatening. Infection can also cause rapid growth of stones, the two cause and effect each other, a vicious circle;
3, local damage, resulting in hematuria, induced polyp hyperplasia, etc., so that the stone and the tube wall to form adhesions;
4, long-term chronic stimulation can occur cancerous lesions, the larger renal calculi, if the residence time in the kidney is too long, long-term chronic stimulation can lead to localized cancerous lesions.