Perineural tumor spread along the auriculotemporal nerve

Area of Science:

• Radiology
• Neuroanatomy
• Oncology

Background:

• Perineural tumor spread in head and neck cancers impacts prognosis.
• Facial and trigeminal nerve communications are potential routes for tumor growth.
• Elucidating the auriculotemporal nerve's course is crucial for diagnosis.

Observation:

• 15 patients with suspected perineural tumor spread along the auriculotemporal nerve were analyzed.
• Imaging reviewed involvement of facial nerve, auriculotemporal nerve, and V(3).
• Clinical and imaging findings suggestive of perineural spread were noted.

Findings:

• The auriculotemporal nerve's anatomical course was detailed.
• Over 50% of patients showed auriculotemporal nerve dysfunction (periauricular pain, TMJ issues).
• Imaging confirmed V(3) involvement in 13 of 15 patients with tumor spread.

Implications:

• Knowledge of the auriculotemporal nerve's anatomy aids in detecting tumor spread.
• Clinical signs like periauricular pain and TMJ dysfunction are key indicators.
• Imaging evidence of V(3) involvement suggests potential auriculotemporal nerve compromise.