Percutaneous Embolization of Delayed External Carotid Artery Pseudoaneurysm Eight Years after Partial Parathyroidectomy

Abstract

External carotid artery pseudoaneurysm (ECAP) is very rare. The usual mechanism is trauma or iatrogenic. We report a case of a patient with an asymptomatic, chronic ECAP secondary to partial parathyroidectomy. Percutaneous injection of the 2-component Fibrin Sealant (Tisseel; Baxter int, Deerfield, IL) with the 2 active ingredients (Sealer Protein Solution and Thrombin Solution) was carried out with successful occlusion of the pseudoaneurysmal sac. The 6-month follow-up computed tomographic scan confirmed the ECAP thrombosis. The ECAP endovascular approach is less invasive and reduces the complications of the open surgical intervention, especially in high-risk patients or presenting with hostile neck.