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Cholelithiasis refers to the presence of gallstones (made of cholesterol or bilirubin) in the biliary tract, usually in the gallbladder (
1,
2). Most individuals with gallstones are asymptomatic (
1,
2,
3). Depending on the size of the gallstone, the outflow of bile into the cystic duct can be blocked as the gallbladder contracts
(3). This can result in an increase in tension in the gallbladder wall and the characteristic pain of biliary colic, often described as a gallbladder attack. This