Biliary calculi are also known as gallstones or cholelithiasis. These are solid formations that form in the gallbladder or bile ducts. Biliary calculus can cause medical complications, like cholecystitis, obstructive jaundice, pancreatitis, and cholangitis. People with increased risk factors like females, overweight, high-fat diets or family history may have frequent occurrences. There are some common synonyms used for biliary calculi, like bile stone, gallstone, cholelith, bilirubin stone, and choledocholiths. Different medical professionals might use different terms, but the underlying meaning is referring to "gallstones". In some instances, biliary calculus is asymptomatic and doesn't require any immediate medical attention. However, in other cases, it can lead to severe medical complications, and prompt medical attention is necessary.