A kidney stone is a solid mass of material that develops in the kidney as a result of urine substances. It might be as little as a sand particle or as big as a pearl. The majority of kidney stones escape the body without the assistance of a doctor. However, a stone may not always disappear. It can become lodged in the urinary system, obstructing urine flow and causing severe pain.You may require treatment if a stone refuses to come out on by itself. Kidney stone removal can be accomplished with shock waves, a scope put into the tube that transports urine out of the body, known as the urethra, or surgery.