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Related Experiment Videos

Facial palsy from temporal bone lesions.

E H Chan1, H M Tan, T Y Tan

  • 1Department of Radiology, Changi General Hospital, Singapore.

Annals of the Academy of Medicine, Singapore
|June 7, 2005
PubMed
Summary

Facial nerve palsy, often Bell's palsy, requires imaging only when symptoms persist or recur. Radiologists must recognize imaging appearances of other causes of seventh cranial nerve injury.

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Area of Science:

  • Radiology
  • Neurology
  • Anatomy

Background:

  • Facial nerve palsy causes loss of facial expression, commonly due to Bell's palsy.
  • Other conditions can injure the seventh cranial nerve, necessitating radiologist awareness.

Purpose of the Study:

  • To review facial nerve anatomy and pathology.
  • To describe the role and modalities of imaging in facial nerve palsy.
  • To illustrate imaging findings of intratemporal facial nerve injuries mimicking Bell's palsy.

Main Methods:

  • Review of relevant facial nerve anatomy and pathology.
  • Analysis of high-resolution computed tomography (HRCT) and magnetic resonance (MR) images from 11 patients.
  • Presentation of typical imaging appearance of Bell's palsy.

Main Results:

  • Imaging can differentiate Bell's palsy from other causes of intratemporal facial nerve injury.
  • HRCT and MR imaging were used to illustrate varied etiologies.
  • The study presented typical imaging findings for Bell's palsy.

Conclusions:

  • Radiologic imaging is not typically needed for suspected Bell's palsy.
  • Imaging is indicated for persistent, progressive, recurrent, or multiple cranial nerve involvement.
  • Consideration of alternative diagnoses is crucial in specific clinical scenarios.

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