What causes gas accumulation in the intrahepatic bile ducts of newborns?

The main causes of intrabiliary gas in the liver of newborns include the following: 1. Congenital factors: During embryonic development, narrowing or atresia of the common bile duct may allow air to enter the bile ducts, which is a common cause of intrabiliary gas in newborns. 2. Biliary tract diseases: Conditions such as biliary fistula or ulcerative lesions of the duodenum in newborns may lead to abnormalities at the junction between the bile ducts and the intestine, resulting in intrabiliary gas accumulation within the liver. 3. Infection and inflammation: Hepatic infections, abscesses, or rupture may create an internal fistula connecting the liver with adjacent intestines, allowing gas to directly enter the liver through the fistulous tract and causing intrabiliary gas in the liver.