Recurrent cholangitis due to an intrahepatic calculus caused by migrated coil for vascular embolization: A case report

We encountered a case in which an arterial embolization coil used for the treatment of a pseudoaneurysm migrated into the bile duct, acting as a nidus for stone formation and resulting in recurrent cholangitis. In patients with a history of intrahepatic coil embolization, it is essential to first confirm the location of the coil within the vasculature and then investigate the underlying cause of stone formation. It is important to consider coil migration as a differential diagnosis in cases of bile duct stones following hepatic artery embolization with coils.