Where 0.9 Cm kidney stone is dangerous to the kidney?

A 0.9 cm kidney stone can be dangerous because it may obstruct the urinary tract, leading to hydronephrosis, which is the swelling of the kidney due to a build-up of urine. This obstruction can cause severe pain, infection, and damage to kidney tissue if not treated promptly. Additionally, larger stones can be more difficult to pass, increasing the risk of complications. Regular monitoring and potential medical intervention are essential to prevent serious harm to kidney function.