SAIMSARA Journal

Machine-Readable Science • ISSN 3054-3991

Eagle Syndrome, Elongated Styloid Process, Craniofacial Pain, and Vascular Complications: Scoping Review with ☸️SAIMSARA.

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Issue 6, Volume 1, 2026

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DOI: 10.62487/saimsara8b9ed253

Editorial note
• Last update: 2026-06-04 21:23:57
What is this paper about
Eagle syndrome is not just an elongated styloid process on imaging — it is a clinical-anatomic compression disorder that can mimic craniofacial pain, dental disease, neuralgia, headache, syncope, stroke, or venous outflow obstruction. Unlock the full read to explore the diagnostic pitfalls, vascular warning signs, treatment patterns, and why styloidectomy remains the most consistently supported definitive option.
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Abstract: To synthesize the structured evidence on Eagle syndrome, emphasizing its defining clinical-anatomic mechanisms, diagnostic approaches, symptom phenotypes, treatment patterns, vascular and neurologic complications, and research priorities. The review uses 218 references and builds its evidence map from 496 original studies with 39660 total participants/sample observations (topic-deduplicated ΣN). The mapped evidence indicates that Eagle syndrome is best framed as a clinical-anatomic compression and irritation disorder rather than a radiographic finding, since elongated styloid processes are frequently asymptomatic and morphology alone does not predict symptoms. Across heterogeneous phenotypes spanning classical pharyngeal, vascular, and jugular variants, styloidectomy emerged as the most consistently supported definitive intervention, with minimally invasive cervical approaches reporting symptom-improvement rates of 94–97% and lidocaine infiltration testing showing 94.4% sensitivity for predicting surgical outcome. Vascular variants warrant particular vigilance because they may present as stroke, dissection, syncope, or cerebral venous sinus thrombosis in patients without traditional risk factors. The dominant uncertainty concerns how to reliably distinguish incidental elongation from symptomatic disease, and future work should prioritize prospective, symptom-linked diagnostic criteria integrating length, angulation, neurovascular contact, and dynamic imaging.

Keywords: Eagle syndrome; Elongated styloid process; Stylohyoid ligament calcification; Styloidectomy; Transcervical approach; Craniofacial pain; Carotid artery dissection; Internal carotid artery; Three-dimensional CT; Head and neck pain

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Reference Index (218)

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