Depending on where the stone will get stuck in the ureter is not fixed, but the more common locations for ureteral stones are mostly in the ureteral strictures, i.e., where the renal pelvis joins the ureter, where the ureter crosses the iliac vessels, and in the inner portion of the wall of the ureteric bladder.
The ureter is divided into two left and two right ureters, connecting the renal pelvis to the bladder, with a length of about 20-30 centimeters. If a ureteral stone occurs, the location of the incarceration can occur throughout the ureter. However, ureteral stones are most often found in ureteral strictures, and the exact location of the incarceration is affected by the size and shape of the stone.
Usually, larger ureteral stones tend to get stuck in the first ureteral stricture, where the renal pelvis meets the ureter. Other smaller stones, after passing through the first ureteral stricture, may become embedded in the mid-ureter, where the ureter crosses the iliac vessels and the inner portion of the ureteric bladder wall.
When a ureteral stone is present, the location of the stone should be clarified in the hospital, including through imaging tests, so that treatment can be initiated as soon as possible to prevent the stone from worsening and causing other urologic problems.