Pathology of the vestibulocochlear nerve

Area of Science:

• Neurology
• Radiology
• Otolaryngology

Background:

• The vestibulocochlear nerve is susceptible to a wide range of pathologies.
• Accurate diagnosis is essential for appropriate patient management.
• Magnetic resonance imaging (MRI) has become the primary diagnostic tool.

Purpose of the Study:

• To provide a comprehensive overview of vestibulocochlear nerve pathologies.
• To highlight the role of MRI in diagnosing these conditions.
• To discuss common and rare entities affecting the vestibulocochlear nerve.

Main Methods:

• Review of literature on vestibulocochlear nerve pathology.
• Emphasis on diagnostic imaging findings with MRI.
• Categorization of pathologies into congenital, tumoral, and other relevant groups.

Main Results:

• Congenital pathologies include agenesis and hypoplasia of the vestibulocochlear nerve.
• Tumoral lesions are most common in the internal auditory canal and cerebellopontine angle.
• Schwannoma is the most frequent tumor, followed by meningioma, arachnoid cysts, and epidermoid cysts.

Conclusions:

• MRI is the gold standard for investigating vestibulocochlear nerve abnormalities.
• Understanding the spectrum of pathologies, from congenital to neoplastic, is crucial for diagnosis.
• This review synthesizes key information on common and rare vestibulocochlear nerve conditions.