TOPICS: Cholelithiasis, gallstones, cholesterol, pigment, bilirubin, mixed, RUQ pain, biliary colic, nausea, obstruction, gallstone ileus, gallbladder cancer, biliary sludge, estrogen, crohn disease, pale yellow, radiolucent, pigment stones, bilirubin, black stones, sickle cell anemia, brown stones, infection, beta glucuronidase, Clonorchis sinensis, Ascaris lumbricoides, cholecystitis, acute cholecystitis, calculus, acalculus, critically ill patients, RUQ pain radiating to scapula, Murphy's sign, ultrasound, HIDA scan, chronic cholecystitis, porcelain gallbladder, gallstone ileus, Rokitansky Aschoff sinus, fistula formation, crampy pain, terminal ileum, dilated bowel loops, pneumobilia, choledocholithiasis, common bile duct, cholangitis, chronic liver disease, pancreatitis, gram negative bacteria, Charcot's triad, Reynolds's pentad, biliary atresia, cirrhosis, liver biopsy, liver transplantation, primary biliary cirrhosis, intrahepatic bile ducts, pruritus, ALP, GGT, IgM, anti mitochondrial antibodies, gallbladder carcinoma, recurrent trauma, adenocarcinoma, cholangiocarcinoma, intra and extrahepatic biliary ducts