Coronary-Vertebral Collaterals in Takayasu Arteritis: Case Report

Abstract

INTRODUCTION: PNonspecific aortoarteritis is a rare autoimmune disease with the involvement and narrowing of the aorta and its branches leading to ischemia of the respective arterial region. In the territory of the Russian Federation, the most common manifestation of Takayasu nonspecific aortoarteritis is lesion of the branches of the aortic arch, which in rare cases leads to development of the so called “bald arch” syndrome. In response to hypoxia, intersystemic collaterals are formed through the neoangiogenesis or redirection of the blood flow from the occluded vessels to small-diameter vessels. In patients with “bald arch” syndrome, the key role in blood supply to the brain is played by the vertebral arteries. Here, collateral blood supply is realized through the intersystemic anastomoses, most often through the anastomotic leaks between the intercostal and internal thoracic arteries. In the literature, single cases of formation of collaterals between coronary and bronchial arteries are reported. The article presents a clinical case of coronary-vertebral anastomoses in a patient with extremely severe course of Takayasu arteritis with occlusion of the brachiocephalic trunk, right common carotid artery (CA), left common CA, right internal CA, left internal CA (“bald arch” syndrome). The probable cause of such course of the disease was late referral for medical help by the patient and lack of adequate basic therapy.

CONCLUSION: The demonstrated case is the fourth case in the world literature describing the existence of collaterals between the coronary arteries and cerebral arteries, and the first case in the world describing the existence of collaterals from the right and left coronary arteries to the vertebral artery. Such unusual pathway of collateral blood supply in the patient is explained by the absence of the possibility for collateral compensation from the systems of subclavian and intercostal arteries, severe chronic cerebral ischemia. Usually, the causes of angina pectoris in patients with nonspecific aortoarteritis are spread of arteritis to the coronary arteries, insufficiency of the aortic valve, hypertrophy of the left ventricle. In the described case, none of these conditions was present, and angina can only be attributed to the existence of unusual collaterals and the development of a transient steal syndrome.

Keywords

Takayasu arteritis / collateral blood supply / coronary arteries / vertebral arteries / coronary-vertebral collaterals / angina pectoris

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RIGHTS & PERMISSIONS

Chupin A.V., Zotikov A.E., Kutovaya A.S., Golovyuk A.L., Kharazov A.F., Kul’bak V.A., Kozhanova A.V., Varava A.B., Tiimina I.E.