Coil Migration After Embolization of Hepatic Artery Pseudoaneurysm Due to Biliary Stent Erosion.

Coil embolization migration is a rare complication of transcatheter arterial embolization intervention. This report describes a 69-year-old male who experienced massive hematemesis due to an iatrogenic hepatic artery pseudoaneurysm caused by erosion from a metal biliary stent. His pseudoaneurysm was treated by coil embolization, initially with resolution of bleeding, but was later complicated by intra-abdominal infections in the setting of the coil migration into the gastrointestinal tract. Consequently, the coil was removed endoscopically with resolution of symptoms. Currently, there are no standardized guidelines for managing migrated coils; however, symptomatic cases often require intervention due to the risk of bleeding, perforation, or infection if not addressed. This case highlights the importance of monitoring patients after undergoing transcatheter arterial embolization and considering endoscopic removal as a practical management consideration.