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The trigeminal nerve

W R Nemzek1

  • 1Department of Radiology, University of California, Davis Medical Center, Sacramento 95817, USA.

Topics in Magnetic Resonance Imaging : TMRI
|June 1, 1996
PubMed
Summary
This summary is machine-generated.

This study details trigeminal nerve pathologies across its anatomical segments. Accurate diagnosis requires imaging the entire nerve, as symptoms don't predict lesion location.

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Area of Science:

  • Neurology
  • Radiology
  • Neuroanatomy

Background:

  • The trigeminal nerve (CN V) is crucial for facial sensation and mastication.
  • Pathologies affecting the trigeminal nerve can arise from various anatomical locations, leading to diverse clinical presentations.
  • Understanding the segmental anatomy is key to diagnosing trigeminal nerve disorders.

Purpose of the Study:

  • To correlate trigeminal nerve pathologies with their specific anatomical locations.
  • To highlight the spectrum of lesions affecting different segments of the trigeminal nerve.
  • To emphasize the importance of comprehensive imaging for accurate diagnosis.

Main Methods:

  • Review of neuroimaging findings in patients with trigeminal nerve abnormalities.
  • Correlation of lesion types with anatomical segments: brain stem, cisternal, Meckel's cave, cavernous sinus, skull base, and peripheral divisions.

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  • Analysis of clinical symptomatology in relation to lesion location.

    • Main Results:

    • Brain stem lesions include neoplasms, vascular disease, and demyelination.
    • Cisternal/Meckel's cave lesions: schwannoma, meningioma, epidermoid, vascular lesions.
    • Cavernous sinus lesions: meningioma, schwannoma, lymphoma, metastasis, vascular lesions.
    • Skull base abnormalities: chordoma, chondrosarcoma, metastasis, Paget's disease.
    • Peripheral nerve involvement: inflammation, perineural malignancy spread, schwannoma.
    • Clinical symptoms are often unreliable for predicting lesion site.

    Conclusions:

    • Trigeminal nerve pathologies exhibit distinct patterns based on anatomical location.
    • Comprehensive imaging of the entire trigeminal nerve pathway is essential for accurate diagnosis.
    • Radiological evaluation should encompass the nerve from the brain stem to its peripheral branches.