Internal Jugular Compression Syndrome Because of Compression Between the Styloid Process and C1 Transverse Process: Clinical Presentation, Diagnosis, and Management.
- 1Department of Neurological Surgery, University of Washington, Seattle, Washington, USA.
- 2Space Policy and Research Center (SPARC), University of Washington, Seattle, Washington, USA.
- 3Department of Radiology, University of Washington, Seattle, Washington, USA.
Abstract
Background and objectives
Internal jugular vein (IJV) compression at the skull base represents a rare cause of cerebral venous outflow obstruction and may mimic Eagle's syndrome. Unlike classic Eagle's syndrome, this condition results from venous compression between the hypertrophic C1 transverse process and the styloid process, producing symptoms such as pulsatile tinnitus, headache, and cognitive disturbances. We describe our experience highlighting the diagnostic protocol and management strategies.Methods
We retrospectively reviewed 5 patients with symptomatic IJV compression syndrome. Demographics, clinical presentation, and treatment outcomes were analyzed. Diagnostic evaluation included computed tomography venography, duplex ultrasonography with head rotation, and cerebral angiography. Four (80%) patients underwent microsurgical decompression of the IJV through a posterolateral suboccipital approach with resection of the hypertrophic C1 transverse process and decompression of the V2-V3 vertebral artery. One patient was managed conservatively.Results
The mean age was 57 years (3 females, 2 males). The mean symptom duration was 7.2 years. Presenting symptoms included pulsatile tinnitus, headache, dizziness, syncope, ear pain, and cognitive complaints. Two patients (40%) had undergone previous treatment without symptom relief. Postoperatively, 3 patients (75%) experienced complete resolution of symptoms and one demonstrated partial symptom improvement with persistent tinnitus attributable to neurovascular compression of cranial nerve VIII. Imaging confirmed restoration of IJV patency in all cases. One patient had spontaneous symptom resolution because of extensive venous collaterals. One patient developed intraoperative vertebral artery dissection because of atherosclerosis which was managed by endarterectomy and reconstruction with Hemashield patch.Conclusion
IJV compression syndrome caused by the hypertrophic C1 transverse process is a distinct clinical condition that should be considered in patients with refractory pulsatile tinnitus or suspected venous intracranial hypertension. Computed tomography venography of head and neck along with head rotation is critical for diagnosis. Microsurgical decompression through a posterolateral far-lateral approach provides effective symptom relief and durable restoration of venous outflow.
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BibTeX
@article{shenoy2026internal,
title = {{Internal Jugular Compression Syndrome Because of Compression Between the Styloid Process and C1 Transverse Process: Clinical Presentation, Diagnosis, and Management.}},
author = {Varadaraya S Shenoy and Tyler Lazaro and Margot Kelly-Hedrick and Landon Basner and Chris Seward and Basavaraj Ghodke and Laligam N Sekhar},
journal = {Neurosurgery practice},
year = {2026},
month = oct,
doi = {10.1227/neuprac.0000000000000308},
url = {https://europepmc.org/article/MED/42910120},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - Internal Jugular Compression Syndrome Because of Compression Between the Styloid Process and C1 Transverse Process: Clinical Presentation, Diagnosis, and Management.
AU - Varadaraya S Shenoy
AU - Tyler Lazaro
AU - Margot Kelly-Hedrick
AU - Landon Basner
AU - Chris Seward
AU - Basavaraj Ghodke
AU - Laligam N Sekhar
PY - 2026
DA - 2026/10/23
JO - Neurosurgery practice
DO - 10.1227/neuprac.0000000000000308
UR - https://europepmc.org/article/MED/42910120
AB - Background and objectives Internal jugular vein (IJV) compression at the skull base represents a rare cause of cerebral venous outflow obstruction and may mimic Eagle's syndrome. Unlike classic Eagle's syndrome, this condition results from venous compression between the hypertrophic C1 transverse process and the styloid process, producing symptoms such as pulsatile tinnitus, headache, and cognitive disturbances. We describe our experience highlighting the diagnostic protocol and management strategies.Methods We retrospectively reviewed 5 patients with symptomatic IJV compression syndrome. Demographics, clinical presentation, and treatment outcomes were analyzed. Diagnostic evaluation included computed tomography venography, duplex ultrasonography with head rotation, and cerebral angiography. Four (80%) patients underwent microsurgical decompression of the IJV through a posterolateral suboccipital approach with resection of the hypertrophic C1 transverse process and decompression of the V2-V3 vertebral artery. One patient was managed conservatively.Results The mean age was 57 years (3 females, 2 males). The mean symptom duration was 7.2 years. Presenting symptoms included pulsatile tinnitus, headache, dizziness, syncope, ear pain, and cognitive complaints. Two patients (40%) had undergone previous treatment without symptom relief. Postoperatively, 3 patients (75%) experienced complete resolution of symptoms and one demonstrated partial symptom improvement with persistent tinnitus attributable to neurovascular compression of cranial nerve VIII. Imaging confirmed restoration of IJV patency in all cases. One patient had spontaneous symptom resolution because of extensive venous collaterals. One patient developed intraoperative vertebral artery dissection because of atherosclerosis which was managed by endarterectomy and reconstruction with Hemashield patch.Conclusion IJV compression syndrome caused by the hypertrophic C1 transverse process is a distinct clinical condition that should be considered in patients with refractory pulsatile tinnitus or suspected venous intracranial hypertension. Computed tomography venography of head and neck along with head rotation is critical for diagnosis. Microsurgical decompression through a posterolateral far-lateral approach provides effective symptom relief and durable restoration of venous outflow.
SN - 2834-4383
ER -