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Updated: Jun 15, 2026

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Published on: March 1, 2015
The glossopharyngeal, vagus and spinal accessory nerves
Cheng Kang Ong1, Vincent Fook Hin Chong
1Department of Diagnostic Imaging, National University Health System, Yong Loo Lin School of Medicine, National University of Singapore, Singapore. ongck22@hotmail.com
This study reviews the anatomy and pathology of the glossopharyngeal, vagus, and spinal accessory nerves. It highlights clinical and imaging findings for common nerve lesions.
Area of Science:
- Neuroanatomy
- Neuroradiology
Background:
- The glossopharyngeal (IX), vagus (X), and spinal accessory (XI) nerves share close anatomical and functional relationships.
- Understanding these relationships is crucial for diagnosing and managing pathologies affecting the neck and cranial base.
Purpose of the Study:
- To provide a comprehensive overview of the anatomy of cranial nerves IX, X, and XI.
- To discuss the clinical and imaging implications of their anatomical relationships.
- To review common pathologic lesions and their associated imaging features.
Main Methods:
- Anatomical review of the glossopharyngeal, vagus, and spinal accessory nerves.
- Discussion of clinical presentations and diagnostic imaging modalities.
- Correlation of pathologic lesions with imaging findings.
Main Results:
- Detailed description of the anatomical pathways and interconnections of nerves IX, X, and XI.
- Identification of key clinical signs and symptoms associated with lesions of these nerves.
- Illustrative examples of imaging features for various pathologic conditions.
Conclusions:
- The intricate anatomy of cranial nerves IX, X, and XI necessitates a thorough understanding for accurate diagnosis.
- Imaging plays a vital role in characterizing lesions affecting these nerves.
- Integrated clinical and imaging assessment is essential for optimal patient management.
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