A deposit on the teeth (see calculus, dental) or a small, hard, crystalline mass that is formed in a body cavity from certain substances in fluids such as bile, urine, or saliva. Calculi can occur in the gallbladder and bile ducts (see gallstones), the kidneys, ureters, or bladder (see calculus, urinary tract), or in the salivary ducts.
Calculus |
|
|