Splitting and penetration of the optic nerve by an aneurysm arising from the anterior wall of internal carotid artery: case report

Aneurysms arising from the anterior wall of the internal carotid artery (ICA) are uncommon. There have not been any reports demonstrating the anatomical relation of such aneurysms to the optic nerve. An aneurysm arising from the anterior wall of the ICA splitting and penetrating the optic nerve is r...

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Bibliographic Details
Published in:Journal of neurology, neurosurgery and psychiatry neurosurgery and psychiatry, 2001-10, Vol.71 (4), p.525-527
Main Authors: Kanamaru, K, Ishida, F, Taki, W
Format: Article
Language:English
Subjects:
Aged
Aneurysms
anterior wall of internal carotid artery
Biological and medical sciences
Carotid artery
Carotid Artery Diseases - diagnosis
Carotid Artery Diseases - surgery
cerebral aneurysm
Cerebral Angiography
Complications and side effects
Diagnosis, Differential
Electrocardiography
embryonic vessel
Female
Heart attacks
Humans
Injuries
Intracranial Aneurysm - diagnosis
Intracranial Aneurysm - surgery
Intracranial aneurysms
Medical sciences
Neurology
Optic nerve
Optic Nerve Diseases - diagnosis
Optic Nerve Diseases - surgery
Short Report
Subarachnoid Hemorrhage - diagnosis
Subarachnoid Hemorrhage - surgery
Tomography, X-Ray Computed
Vascular diseases and vascular malformations of the nervous system
Veins & arteries
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Summary:Aneurysms arising from the anterior wall of the internal carotid artery (ICA) are uncommon. There have not been any reports demonstrating the anatomical relation of such aneurysms to the optic nerve. An aneurysm arising from the anterior wall of the ICA splitting and penetrating the optic nerve is reported. A 73 year old woman presented with severe headache due to subarachnoid haemorrhage. She had never experienced a visual disturbance. At surgery, the aneurysm was shown to arise from the anterior wall of the left internal carotid artery and to split and penetrate the left optic nerve. The aneurysm was not related to arterial bifurcation of any branches and was safely neck clipped. Given the evidence of a split and penetration of the optic nerve, the pathogenesis of such an aneurysm may be due to the persistence of an embryonic vessel.
ISSN:0022-3050
1468-330X
DOI:10.1136/jnnp.71.4.525