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Eagle Syndrome with Internal Carotid Artery Compression Causing Recurred Syncope.

Jinmei Sun¹, Chengjie Zhang¹, Beibei Liu¹

¹Department of Neurology, Beijing Friendship Hospital, Capital Medical University, China.

Internal Medicine (Tokyo, Japan)

|September 1, 2022

Summary

Eagle syndrome, characterized by elongated styloid processes, caused syncope in a patient due to carotid artery compression. Surgical correction resolved positional cerebral blood flow issues and prevented further fainting episodes.

Keywords:

Eagle syndrome case report elongated styloid process styloid-carotid syndrome syncope

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Area of Science:

Neurology
Vascular Surgery
Radiology

Background:

Eagle syndrome is a rare condition involving an elongated or abnormal styloid process.
It can cause various symptoms, including neck pain, dysphagia, and cranial nerve issues.
Cervical artery compression is an underrecognized manifestation of Eagle syndrome.

Observation:

A 54-year-old male presented with recurrent syncope, particularly upon head flexion.
Computed tomography revealed bilateral elongated styloid processes compressing the left internal carotid artery.
Transcranial Doppler showed reduced left middle cerebral artery blood flow velocity with head movement.

Findings:

Elongated styloid processes can cause significant internal carotid artery compression.
Positional compression of the carotid artery can lead to transient cerebral hypoperfusion.
This hypoperfusion manifested as recurrent syncope in the reported case.

Implications:

Surgical intervention can effectively decompress the affected artery.
Addressing styloid process-induced vascular compression can resolve neurological symptoms like syncope.
This case highlights the importance of considering Eagle syndrome in the differential diagnosis of positional syncope.