Surgical and radiologic anatomy : SRA · 2026
Double vertebral artery-connected persisting proatlantal artery coexisting with a persisting carotid duct in an adult case: first evidence.
СтатьяКлинический случайНазвание и аннотация: Перевод в очереди
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Rusu Mugurel Constantin, Jianu Adelina Maria, Grigoriţă Laura Octavia, Tudose Răzvan Costin
Аннотация
PURPOSE: The persistent proatlantal artery represents persistence of the embryonic first cervical intersegmental artery and creates a carotid-vertebral anastomosis. A persisting carotid duct is an exceptionally rare persistence of the dorsal aortic segment between the third and fourth aortic arches. It may be associated with segmental occlusion/stenosis of the proximal external carotid artery.
METHODS: Archived computed tomography angiography files in a 62 year-old man were studied anatomically.
RESULTS: A right-sided persisting carotid duct arising from the subclavian artery with short proximal ECA occlusion/stenosis and reconstitution of the distal ECA was found. A large type II PPA arose from the reconstituted ECA, formed a suboccipital loop giving rise to the occipital segment of the occipital artery, and established two distinct junctions with the vertebral artery: an anterior branch to the V3 segment near the posterior condylar foramen and an inferior branch to the V2 segment immediately before entry into the C1 transverse foramen.
CONCLUSION: This configuration provides imaging evidence of a true 'double-connection' of a persisting proatlantal artery, coexisting with a persisting carotid duct and proximal external carotid occlusion/stenosis, with potential implications for carotid interventions and posterior-circulation haemodynamics.
METHODS: Archived computed tomography angiography files in a 62 year-old man were studied anatomically.
RESULTS: A right-sided persisting carotid duct arising from the subclavian artery with short proximal ECA occlusion/stenosis and reconstitution of the distal ECA was found. A large type II PPA arose from the reconstituted ECA, formed a suboccipital loop giving rise to the occipital segment of the occipital artery, and established two distinct junctions with the vertebral artery: an anterior branch to the V3 segment near the posterior condylar foramen and an inferior branch to the V2 segment immediately before entry into the C1 transverse foramen.
CONCLUSION: This configuration provides imaging evidence of a true 'double-connection' of a persisting proatlantal artery, coexisting with a persisting carotid duct and proximal external carotid occlusion/stenosis, with potential implications for carotid interventions and posterior-circulation haemodynamics.