Splaying of the Carotid Bifurcation Caused by a Cervical Sympathetic Chain Schwannoma

Author:

Wang Cheng-Ping1,Hsiao Jong-Kai1,Ko Jenq-Yuh1

Affiliation:

1. Taipei, Taiwan

Abstract

Splaying of the carotid bifurcation revealed by an imaging study is usually indicative of a carotid body tumor, but there are other possibilities. To promote awareness of a cervical sympathetic chain schwannoma as another cause of splaying of the carotid bifurcation, we present a case of cervical sympathetic chain schwannoma, with an additional 7 cases in the English-language literature, and discuss the relationship between the great vessels of the neck and a carotid body tumor or a schwannoma of the cervical sympathetic chain or vagus nerve from an anatomic viewpoint. We conclude that splaying of the carotid bifurcation with hypervascularity suggests a carotid body tumor, whereas in cases without hypervascularity, a cervical sympathetic chain schwannoma is another possibility. Vagus nerve schwannomas can separate the internal jugular vein and internal carotid artery, but seldom widen the carotid bifurcation.

Publisher

SAGE Publications

Subject

General Medicine,Otorhinolaryngology

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3. Conventional Magnetic Resonance Imaging for Preoperative Detection of Schwannoma Originating from the Cervical Nerve;Japanese Journal of Magnetic Resonance in Medicine;2023-02-15

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5. Intracapsular Enucleation of Cervical Sympathetic Chain Schwannoma;Ear, Nose & Throat Journal;2022-09-07

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