Thank you for the query.
due to bile ducts appears when the flow throughout bile ducts is either impeded or completely blocked. It happens when some small stones from gall bladder
gets stuck in bile duct, when some mass is compressing bile ducts. Sometimes jaundice appears due to primary sclerosing cholangitis
. In all this cases ERCP should be performed and if necessary with stenting of bile ducts.
This ERCP will decrease bile pressure in bile ducts and should be a remedy for your son.
Hope this will help.