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Related Experiment Videos

Persistent trigeminal artery: an anatomic study

E Salas1, I M Ziyal, L N Sekhar

  • 1Department of Neurological Surgery, The George Washington University Medical Center, Washington, District of Columbia 20037, USA.

Neurosurgery
|September 11, 1998
PubMed
Summary
This summary is machine-generated.

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A persistent trigeminal artery (PTA), a common embryonic communication, was analyzed in an anatomic specimen. Its course relative to cranial nerves can influence clinical presentation.

Area of Science:

  • Neuroanatomy
  • Embryology
  • Vascular anatomy

Background:

  • The persistent trigeminal artery (PTA) is the most common embryonic connection between the carotid and vertebrobasilar systems.
  • Observed in 0.1-0.2% of cerebral angiograms, PTA represents a significant embryological remnant.

Observation:

  • A PTA was identified and dissected in a cadaver specimen during a transpetrosal approach.
  • Microscopic analysis focused on the PTA's anatomical course and its relationship with the abducens nerve and meningohypophyseal trunk.

Findings:

  • The PTA exhibits two main courses relative to the abducens nerve: lateral and medial.
  • A lateral course involves the PTA distorting the abducens nerve, while a medial course is less likely to cause cranial nerve displacement.
  • The meningohypophyseal trunk may share a common or separate origin with the PTA.

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Implications:

  • Understanding the PTA's anatomical course is crucial for interpreting its clinical significance.
  • The spatial relationship between the PTA and adjacent cranial nerves can impact neurological symptoms and surgical approaches.