Is common bile duct filling defect cancer?

Whether common bile duct filling defect is cancer or not needs to be judged according to specific circumstances. Common

bile duct filling defect is a manifestation under imaging, generally related to cholangitis, gallstones and cholangiocarcinoma. If no obvious protruding lesions are found during imaging examination, cancer is generally not considered. However, if obvious masses are found under imaging examination, or accompanied by intrahepatic bile duct dilatation, it may be cholangiocarcinoma. It is recommended to further diagnose by tumor marker examination and puncture tumor biopsy.