Coil migration from the external carotid artery to the internal carotid artery during coil embolization for pseudoaneurysm of the lingual artery

Abstract

  Coil migration occurs in approximately 2‒6% of cases of coil embolization for brain aneurysms. We report our experience of the case of a 75‒year‒old man in whom a coil migrated into the internal carotid artery during embolization for a lingual artery pseudoaneurysm that occurred due to denture aspiration. Given the rarity of distal coil migration, flow control is often not performed in embolization for the external carotid artery using a coil. With giant aneurysms, blood flow may change after embolization, as in the present case. It is worthwhile to consider the risk of coil migration into the internal carotid artery when the branch is near the internal carotid artery.