Your kidneys are two bean-shaped organs, each about the size of your fists. ... They remove waste products and extra water, which become urine. Inside each kidney about a million tiny structures called nephrons filter blood...
Kidney stones, one of the most painful of the urologic disorders, have beset humans for centuries...A less common type of stone is caused by infection in the urinary tract. This type of stone is called a struvite or...
