Kidney Stones

Kidney Stones

About Kidney Stones

A kidney stone, also known as a renal calculus (from the Latin ren, "kidney" and calculus, "pebble") is a solid concretion or crystal aggregation formed in the kidneys from dietary minerals in the urine. Urinary stones are typically classified by their location in the kidney (nephrolithiasis), ureter (ureterolithiasis), or bladder (cystolithiasis), or by their chemical composition (calcium-containing, struvite, uric acid, or other compounds). Kidney stones are a significant source of morbidity. About 80% of those with kidney stones are men. Men most commonly experience their first episode between 30 and 40_years of age, while for women, the age at first presentation is somewhat later. Kidney stones typically leave the body by passage in the urine stream, and many stones are formed and passed without causing symptoms. If stones grow to sufficient size (usually at least 3 millimeters (0.12_in)) they can cause obstruction of the ureter.

Contributions by Davidruben, Goethean, and Jrdean33.

New Questions for Kidney Stones

See All Questions