"kidney stone." YourDictionary, n.d. Web. 20 January 2019. <https://www.yourdictionary.com/kidney-stone>.
kidney stone. (n.d.). Retrieved January 20th, 2019, from https://www.yourdictionary.com/kidney-stone
A calculus that originates in the kidney and is usually composed of calcium salts, uric acid, cystine, and other compounds. Kidney stones cause extreme pain and bleeding if they obstruct the passage of urine in the kidney or in the ureter. They can often be treated with lithotripsy .