Hello, the discharge of kidney stones will go through the kidneys, ureter, bladder, urethra, the narrowest channel is mainly the ureter, normal people's ureter is thin where two or three millimeters, it can pass through the ureter later into the bladder, out of the urethra will be relatively easy.

The discharge of kidney stones, according to the treatment to be divided: First, the diameter of less than 6mm kidney stones, generally can be directly through the urine discharge. Second, the diameter of the stone is between 6mm-10mm, more drugs are used to dissolve the stone, and ultimately discharged from the body through the urine. Third, the use of extracorporeal ultrasound technology, when the diameter of the stone is between 10-20 mm, the stone will be broken, and finally discharged through the urine. When the diameter of the stone is greater than 20 mm, it will be surgically removed from the body.