Intrahepatic bile duct stones, as the name implies, are stones located within the bile ducts inside the liver. The biliary tract is divided into extrahepatic and intrahepatic bile ducts. The intrahepatic bile ducts refer to the left and right hepatic ducts and their related branches. The intrahepatic bile ducts evolve from the left and right hepatic ducts into the common hepatic duct, common bile duct, and gallbladder, which are part of what we commonly refer to as the extrahepatic bile ducts. The symptoms of intrahepatic bile duct stones are not as apparent as those of common bile duct stones, but most intrahepatic bile duct stones cause upper abdominal pain in patients; generally, jaundice does not occur.