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Vertebral Artery Stump Syndrome.

Masato Suzuki1, Tomohisa Dembo1, Wataru Hara1

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Summary

Vertebral artery stump syndrome, a rare cause of posterior circulation stroke, can result from turbulent flow at the occlusion site. This case highlights a potential mechanism for this uncommon embolic event.

Keywords:
bilateral cerebellar infarctionembolic ischemic strokespiral turbulent flowultrasonographyvertebral artery stump syndrome

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Area of Science:

  • Neurology
  • Vascular Neurology
  • Cerebrovascular Diseases

Background:

  • Carotid stump syndrome is a recognized cause of embolic stroke.
  • Vertebral artery stump syndrome is a less common condition affecting posterior circulation.
  • Occlusion at the vertebral artery origin can lead to stroke.

Observation:

  • A case of infarction in the superior cerebellar artery and posterior inferior cerebellar artery territories is presented.
  • Turbulent flow was observed distal to the vertebral artery occlusion.
  • Ultrasonography was used to visualize the turbulent flow.

Findings:

  • The study identifies vertebral artery stump syndrome as the cause of the observed infarction.
  • Turbulent flow at the distal occlusion site is proposed as the mechanism for embolism.
  • This mechanism explains the embolic events leading to posterior circulation stroke.

Implications:

  • This finding expands the understanding of embolic stroke mechanisms.
  • It highlights the importance of considering vertebral artery stump syndrome in posterior circulation strokes.
  • The identification of turbulent flow as a mechanism may influence diagnostic and therapeutic strategies.