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Published in: Neuroradiology 6/2008

01-06-2008 | Diagnostic Neuroradiology

Abnormal course of the vertebral artery at the craniovertebral junction in patients with Down syndrome visualized by three-dimensional CT angiography

Authors: Masashi Yamazaki, Akihiko Okawa, Mitsuhiro Hashimoto, Atsuomi Aiba, Yukio Someya, Masao Koda

Published in: Neuroradiology | Issue 6/2008

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Abstract

Introduction

We determined the incidence of vertebral artery (VA) anomalies at the craniovertebral junction (CVJ) in patients with Down syndrome, and characterized the VA anomalies.

Methods

The course of the VA in 46 consecutive patients who were due to undergo posterior arthrodesis surgery at the CVJ were evaluated by three-dimensional CT angiography (3DCTA). Included were five patients with Down syndrome who suffered from myelopathy due to atlantoaxial subluxation. All five patients with Down syndrome also had a simultaneous congenital skeletal anomaly, either os odontoideum or ossiculum terminale.

Results

Of the five patients with Down syndrome, three had VA anomalies at the CVJ, two had fenestration and one had a persistent first intersegmental artery. Of the other 41 patients without Down syndrome, five had VA anomalies at the CVJ. The incidence of VA anomalies at the CVJ was much higher in patients with Down syndrome than in those without Down syndrome.

Conclusion

In planning surgery in patients with Down syndrome with symptomatic atlantoaxial subluxation and a congenital skeletal anomaly at the CVJ, we should consider the possible presence of VA anomalies. Preoperative 3DCTA allows us to precisely identify an anomalous VA and evaluate the possible risk of intraoperative VA injury in advance.
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Metadata
Title
Abnormal course of the vertebral artery at the craniovertebral junction in patients with Down syndrome visualized by three-dimensional CT angiography
Authors
Masashi Yamazaki
Akihiko Okawa
Mitsuhiro Hashimoto
Atsuomi Aiba
Yukio Someya
Masao Koda
Publication date
01-06-2008
Publisher
Springer-Verlag
Published in
Neuroradiology / Issue 6/2008
Print ISSN: 0028-3940
Electronic ISSN: 1432-1920
DOI
https://doi.org/10.1007/s00234-008-0368-8

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