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Related Experiment Videos

[Persistent primitive olfactory artery: report of 5 cases].

T Kaneko1, K Suetake, T Shinya

  • 1Department of Neurosurgery, Otaru Neurosurgical Hospital, Japan.

No Shinkei Geka. Neurological Surgery
|October 27, 1999
PubMed
Summary

A rare persistent primitive olfactory artery, potentially from embryonic development, was found supplying the anterior cerebral artery. This anatomical variation can lead to cerebral aneurysms at hairpin turns, requiring surgical consideration.

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Area of Science:

  • Neuroanatomy
  • Vascular Neurology
  • Embryology

Background:

  • Persistent primitive arteries are rare congenital vascular anomalies.
  • The olfactory artery's role in cerebral circulation is not well-defined.

Observation:

  • Five cases of a persistent primitive olfactory artery are presented.
  • The anomalous artery followed the olfactory nerve anteromedially, forming a hairpin turn.
  • This artery supplied the anterior cerebral artery circulation.

Findings:

  • A cerebral aneurysm was identified at the hairpin curve of the persistent primitive olfactory artery.
  • The artery's unique course and hairpin turn may predispose it to hemodynamic stress.
  • Embryonic development is proposed as the origin of this persistent artery.

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Implications:

  • This anatomical variation can lead to the formation of cerebral aneurysms.
  • Hemodynamic stress at the hairpin turn is implicated in aneurysm development.
  • Surgical intervention should be considered for any aneurysm associated with this artery.