biliary calculus

calculus /cal·cu·lus/ (kal´ku-lus) pl. cal´culi   [L.] an abnormal concretion, usually composed of mineral salts, occurring within the animal body.cal´culous

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biliary calculus  gallstone.

dental calculus  calcium phosphate and carbonate, with organic matter, deposited on tooth surfaces.

lung calculus  one formed in the bronchi by accretion about an inorganic nucleus, or from calcified portions of lung tissue or adjacent lymph nodes.

oxalate calculus  a urinary calculus made of calcium oxalate; some have tiny sharp spines and others are smooth.

renal calculus  one in the kidney.

salivary calculus 

1. sialolith.

2. supragingival c.

struvite calculus  a urinary calculus of crystals of struvite (magnesium ammonium phosphate).

supragingival calculus  that covering the coronal surface of the tooth to the crest of the gingival margin.

urinary calculus  one in any part of the urinary tract.

uterine calculus  uterolith; a concretion in the uterus.

vesical calculus  one in the urinary bladder.

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biliary calculus

n.

See gallstone.

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biliary calculus

Etymology: L, bilis, bile, calculus, pebble

a stone formed in the biliary tract, consisting of cholesterol or bile pigments and calcium salts. Biliary calculi may cause jaundice, right upper quadrant pain, obstruction, and inflammation of the gallbladder. If stones cannot pass spontaneously into the duodenum, cholangiography or similar processes will reveal their location, and they can be removed surgically. Also called choledocholithiasis, gallstones. See also cholangitis, cholecystitis, cholelithiasis.

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calculus

pl. calculi [L.] an abnormal concretion, usually composed of mineral salts, occurring within the animal body, chiefly in the hollow organs or their passages. Called also stones, as in kidney stones (urolithiasis) and gallstones. See also hippomanes.

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biliary calculus

a gallstone.

bronchial calculus

see bronchial calculus.

dental calculus

mineralized deposits of calcium phosphate and carbonate, with organic matter, deposited on tooth surfaces. Found commonly in dogs and cats, sometimes in horses, rarely in sheep. May initiate caries and peridontal disease.

lung calculus

a concretion formed in the bronchi. See also bronchial calculus.

pancreatic calculus

very small (4 to 5 mm) calculi in pancreatic ducts, rare and of no pathogenic importance.

prostatic calculus

concretions of calcium phosphates and carbonates in the prostatic ducts are rare and of no clinical significance.

renal calculus

see urolithiasis.

salivary calculus

white, hard, laminated concretions in the salivary duct; a sialolith. Occurs most commonly in horses.

urethral calculus

a calculus lodged in the urethra causes obstruction of the urethra with a potential for causing rupture of the bladder or perforation of the urethra and leaking of urine into subcutaneous or retroperitoneal sites. See also urolith, urolithiasis.

urinary calculus

a calculus in any part of the urinary tract. See urolithiasis.

vesical calculus

a urolith in the urinary bladder.

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biliary calculus

Gallstone, see there