Separate origins of the left internal and external carotid arteries from the aorta in a patient with intracerebral hemorrhage

Yuma Hiratsuka, MD; Hideki Endo, MD, PhD; Naoyasu Okamura, MD; Masaaki Mikamoto, MD; Bunsho Asayama, MD; Kenji Kamiyama, MD; Toshiaki Osato, MD; Hirohiko Nakamura, MD, PhD

Radiology Case Reports (May 2022)

Separate origins of the left internal and external carotid arteries from the aorta in a patient with intracerebral hemorrhage

Yuma Hiratsuka, MD,
Hideki Endo, MD, PhD,
Naoyasu Okamura, MD,
Masaaki Mikamoto, MD,
Bunsho Asayama, MD,
Kenji Kamiyama, MD,
Toshiaki Osato, MD,
Hirohiko Nakamura, MD, PhD

Affiliations

Yuma Hiratsuka, MD: Department of Neurosurgery, Nakamura Memorial Hospital, South 1, West 14, Chuo-ku, Sapporo, Hokkaido 060-8570, Japan
Hideki Endo, MD, PhD: Corresponding author.; Department of Neurosurgery, Nakamura Memorial Hospital, South 1, West 14, Chuo-ku, Sapporo, Hokkaido 060-8570, Japan
Naoyasu Okamura, MD: Department of Neurosurgery, Nakamura Memorial Hospital, South 1, West 14, Chuo-ku, Sapporo, Hokkaido 060-8570, Japan
Masaaki Mikamoto, MD: Department of Neurosurgery, Nakamura Memorial Hospital, South 1, West 14, Chuo-ku, Sapporo, Hokkaido 060-8570, Japan
Bunsho Asayama, MD: Department of Neurosurgery, Nakamura Memorial Hospital, South 1, West 14, Chuo-ku, Sapporo, Hokkaido 060-8570, Japan
Kenji Kamiyama, MD: Department of Neurosurgery, Nakamura Memorial Hospital, South 1, West 14, Chuo-ku, Sapporo, Hokkaido 060-8570, Japan
Toshiaki Osato, MD: Department of Neurosurgery, Nakamura Memorial Hospital, South 1, West 14, Chuo-ku, Sapporo, Hokkaido 060-8570, Japan
Hirohiko Nakamura, MD, PhD: Department of Neurosurgery, Nakamura Memorial Hospital, South 1, West 14, Chuo-ku, Sapporo, Hokkaido 060-8570, Japan

Journal volume & issue: Vol. 17, no. 5
pp. 1770 – 1772

Abstract

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Agenesis of the left common carotid artery with separate origins of the left internal and external carotid arteries from the aorta is an extremely rare anomaly. This anomaly is typically asymptomatic unless associated with other conditions. We report a case of separate origins of the left internal and external carotid arteries from the aorta in a patient with intracerebral hemorrhage. A 42-year-old man was transferred to our hospital by ambulance because of left hemiparesis. Computed tomography scan revealed right putaminal hemorrhage. Computed tomography angiography and digital subtraction angiography demonstrated independent origins of the left internal carotid artery and external carotid artery from the aortic arch. Right internal carotid angiography revealed blood supply to the left anterior cerebral artery and middle cerebral artery via the anterior communicating artery. The separate origins of the left internal and external carotid arteries from the aorta may cause hemodynamic stress to the contralateral side, leading to right intracerebral hemorrhage.

Published in Radiology Case Reports

ISSN: 1930-0433 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Medicine: Medicine (General): Medical physics. Medical radiology. Nuclear medicine
Website: https://www.sciencedirect.com/journal/radiology-case-reports

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