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Related Experiment Videos

Anterior paraclinoid aneurysms.

Hiroyuki Kinouchi1, Kazuo Mizoi, Yoshihide Nagamine

  • 1Department of Neurosurgery, Akita University School of Medicine, Japan. kinouchi@nsg.med.akita-u.ac.jp

Journal of Neurosurgery
|June 18, 2002
PubMed
Summary

This study analyzed rare paraclinoid aneurysms of the internal carotid artery. Surgical treatment yielded satisfactory outcomes for these intradural aneurysms, which pose a risk of subarachnoid hemorrhage (SAH).

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Area of Science:

  • Neurosurgery
  • Vascular Neurology

Background:

  • Paraclinoid aneurysms are rare and often unclassified.
  • Aneurysms arising from the anterolateral wall of the proximal internal carotid artery present unique challenges.

Purpose of the Study:

  • To analyze the characteristics of previously unclassified paraclinoid aneurysms.
  • To evaluate the surgical treatment outcomes for these unusual aneurysms.

Main Methods:

  • Retrospective analysis of seven patients with paraclinoid aneurysms.
  • Surgical intervention was performed on all patients.
  • Anterior clinoid process removal was often necessary due to aneurysm neck proximity to the dural ring.

Main Results:

  • A female predominance was observed, with multiple aneurysms in female patients.

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  • Lesions were found incidentally or during investigation of subarachnoid hemorrhage (SAH).
  • One patient presented with SAH due to aneurysm rupture.

    • Conclusions:

    • This specific group of aneurysms is rare, located intradurally, and carries a risk of SAH.
    • Surgical treatment for these aneurysms demonstrated satisfactory results.