Reviewed by Rishi Desai, MD, MPH
A gallstone, also called a cholelith, is a stone formed within the gallbladder. Gallstones are typically from either cholesterol (80%) or bilirubin. Gallstones are formed in the gallbladder but may pass distally into other parts of the biliary tract such as the cystic duct, common bile duct, pancreatic duct or the ampulla of Vater. Complications of gallstones include inflammation of the gallbladder, inflammation of the pancreas, and gallstone ileus. Symptoms of these complications may include pain, fever, jaundice, vomiting, or tea-color urine. Risk factors for gallstones include birth control pills, pregnancy, a family history of gallstones, obesity, diabetes, liver disease, or rapid weight loss.