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Anomalous Internal Carotid Anastomosis to Contralateral Anterior Cerebral Artery

Published online by Cambridge University Press:  02 December 2014

Yasuo Murai ,
Yukio Ikeda ,
Hidetaka Sato ,
Yasuhiro Yamamoto  and
Akira Teramoto
Yasuo Murai*
Affiliation:
Department of Neurosurgery and Critical Care Medicine, Nippon Medical School, Tokyo, Japan
Yukio Ikeda
Affiliation:
Department of Neurosurgery, Hachioji, Medical Center of Tokyo Medical University, Toyko, Japan
Hidetaka Sato
Affiliation:
Department of Neurosurgery and Critical Care Medicine, Nippon Medical School, Tokyo, Japan
Yasuhiro Yamamoto
Affiliation:
Department of Neurosurgery and Critical Care Medicine, Nippon Medical School, Tokyo, Japan
Akira Teramoto
Affiliation:
Department of Neurosurgery and Critical Care Medicine, Nippon Medical School, Tokyo, Japan
*
Department of Neurosurgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Toyko 113-8603, Japan
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Abstract:

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Background:

Many anomalies and variants in vascular anatomy have been reported in relation to the anterior cerebral artery (ACA). Patients and

Patients and Methods:

We encountered an apparently novel anomaly in a 30-year-old man admitted for disturbance of consciousness following a traffic accident. Computed tomography revealed an acute subdural hematoma and subarachnoid hemorrhage.

Results and conclusions:

No vascular abnormalities related to the hemorrhage were detected by conventional angiography, so we concluded that the bleeding was of traumatic origin. Anomalous origin of the ACA was disclosed incidentally, with both A1 segments arising from the right internal carotid artery; no normal A1 segment of the left ACA was visualized. We discuss possible bases for this anomalous origin.

Résumé:

RÉSUMÉ: Introduction:

Plusieurs anomalies et variantes de l’anatomie vasculaire de l’artère cérébrale antérieure (ACA) ont été rapportées.

Patients et méthodes:

Nous avons rencontré une nouvelle anomalie chez un homme de 30 ans admis pour altération de l’état de conscience suite à un accident de la route. La tomographie assistée par ordinateur a montré un hématome sous-dural aigu. Aucune anomalie vasculaire reliée à l’hémorragie n’a été détectée par angiographie conventionnelle. Nous avons donc conclu que le saignement était d’origine traumatique.

Résultats et conclusions:

L’origine anormale de l’ACA a été une découverte fortuite. Les deux segments A1 de l’ACA gauche prenaient naissance à la carotide interne droite et aucun segment A1 normal n’a été visualisé. Nous discutons des causes possibles de cette anomalie.

Type
Case Report
Information
Canadian Journal of Neurological Sciences , Volume 32 , Issue 3 , August 2005 , pp. 359 - 360
Copyright
Copyright © The Canadian Journal of Neurological 2005

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