Bladder/Ureter calculus

A calculus (plural: calculi), also known as a bladder (or rarely ureter) stone, is similar in composition to a kidney stone. Calculi are made of salts and minerals from urine which have not been excreted. In the bladder, these salts and minerals have been retained for an extended period of time causing a stone to form. The number, size and composition of bladder stones may vary.A calculus in the ureter is usually a kidney stone that has dropped into the ureter - it is usually extremely painful and thus not new, and not seen outside of a hospital setting. A calculus in the ureter is best evaluated by CT imaging, Xray or urology specialists.