J Cerebrovasc Endovasc Neurosurg.  2018 Dec;20(4):231-234. 10.7461/jcen.2018.20.4.231.

A Type 1 Persistent Proatlantal Artery Originating from the External Carotid Artery Detected by Computed Tomographic Angiography

Affiliations
  • 1Department of Neurosurgery, National Medical Center, Seoul, Korea. hanibalkms@hanmail.net

Abstract

A persistent proatlantal artery (PA) is rare. We report a type 1 persistent PA originating from the right external carotid artery (ECA). A 78-year-old woman presented with dizziness. Computed tomographic (CT) angiography showed a persistent PA originating from the right ECA. This persistent PA did not pass through the atlas transverse foramen. The extracranial segment of this artery in the atlas transverse process level had a more lateral position than a normal left vertebral artery. CT angiography well demonstrated the relationship with bony structures and the course of this persistent PA. This anomalous artery in our patient presented as an incidental finding. Surgeon should recognize a persistent PA when performing carotid endarterectomy or ligation of the ECA for avoidance of complication.

Keyword

Persistent proatlantal artery; Clinical significance; Embryogenesis

MeSH Terms

Aged
Angiography*
Arteries*
Carotid Artery, External*
Dizziness
Embryonic Development
Endarterectomy, Carotid
Female
Humans
Incidental Findings
Ligation
Pregnancy
Vertebral Artery
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