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A rare case of aortic arch variation complicated with multiple ruptured intracranial aneurysms
Wei Liu1, Jialu Li2, Baoyuan Zhou3
1Department of Neurology, Lanzhou University Second Hospital, Lanzhou, China.
Insights
A rare aortic arch variation with multiple ruptured intracranial aneurysms was observed. This anatomical anomaly may increase stroke risk by altering cerebral blood flow.
Area of Science:
- Vascular anatomy
- Neurology
- Embryology
Background:
- Aortic arch variations are known for cardiovascular implications.
- Intracranial aneurysms pose significant neurological risks.
Observation:
- A rare aortic arch variation presented with multiple ruptured intracranial aneurysms.
- Specific atypical origins of the brachiocephalic trunk and left-sided great arteries were noted.
Findings:
- This specific aortic arch anomaly and associated intracranial aneurysms have not been previously reported.
- The variation involved isolated origins of the left common carotid artery, left vertebral artery, and left subclavian artery.
Implications:
- Aortic arch variations can impact cerebral vessel structure and blood flow, potentially increasing stroke risk.
- Third aortic arch degeneration is a proposed embryologic mechanism for certain aortic arch anomalies.
Objectives:
Previous reports on aortic arch variations have emphasized on its cardiovascular significance. We present a case of a rare variation of aortic arch complicated with multiple ruptured intracranial aneurysms.
Methods:
This case report reviews the effects of the diameter of internal carotid artery of isolated origins on cerebral vessels.
Results:
The brachiocephalic trunk, left external carotid artery, left internal carotid artery, left vertebral artery, and the left subclavian artery originating from the aortic arch complicated with multiple ruptured intracranial aneurysms have not been reported.
Conclusions:
Variation of the aortic arch may affect carotid and cerebral vessel structures as well as blood flow and is a potential risk factor for stroke. Third aortic arch degeneration, or dorsal aorta non-degeneration, is a potential embryologic mechanism for the absence of the left common carotid artery.
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