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Eagle syndrome presenting with external carotid artery pseudoaneurysm
Anh Dao1, Stellios Karnezis, John S Lane
1Department of Radiological Sciences, U.C. Irvine Medical Center, University of California-Irvine, 101 The City Drive, Orange, CA 92868, USA.
Emergency Radiology
|January 8, 2011
Summary
Eagle syndrome, a condition involving elongated styloid processes, can lead to external carotid artery pseudoaneurysms. This case highlights a rare presentation and successful surgical management.
Area of Science:
- Vascular Surgery
- Head and Neck Surgery
- Radiology
Background:
- Eagle syndrome is characterized by styloid process elongation and stylohyoid ligament ossification.
- This anatomical variation can cause diverse clinical symptoms.
- Vascular complications are rare but significant.
Observation:
- A patient presented with a painful, expanding neck mass.
- CT angiography revealed a large external carotid artery (ECA) pseudoaneurysm.
- Associated findings included bilateral stylohyoid ligament ossification and a sharp right styloid process.
Findings:
- Surgical intervention included aneurysmectomy and carotid artery bypass using saphenous vein.
- Resection of the elongated styloid process was performed.
- Pathology confirmed the pseudoaneurysm diagnosis.
Implications:
- This case represents the first reported instance of Eagle syndrome causing an ECA pseudoaneurysm.
- Successful surgical treatment resolved symptoms and restored arterial flow.
- Highlights the importance of considering vascular complications in Eagle syndrome.
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