Agenesis of the left common carotid artery with independent origins of the internal and
external carotid arteries arising directly from the aortic arch is an extremely rare congenital …

A case illustrating a congenital anomaly in the development of the left carotid artery is
presented. The common carotid artery was found to be absent, with both internal and …

Background Agenesis of the common carotid artery (CCA) resulting in separation of the
origin of the external carotid artery (ECA) and internal carotid artery (ICA) from the aortic …

Discussion Probably the earliest reported case of absence of a common carotid artery was
that of Malacarne[2] in 1784. Since then, at least 20 cases have been reported [2-21]. Most …

A 65-year-old male developed severe headache of sudden onset 3 months prior to
admission. The right retrograde brachial angiogram revealed that the right internal carotid …

Discussion McDonald and Ansen[2] described four common aontic arch branching patterns
and 13 unusual patterns, including their relative incidences. Absence of a common carotid …

This case report demonstrates a rare vascular pattern of a left external carotid artery (ECA)
that arises directly from the aortic arch (AA), along with a type II proatlantal-vertebral artery …

Congenital agenesis of the internal carotid artery is a very rare anomaly. Intracranial
circulation in the involved internal carotid artery territory is maintained by collateral …

DISCUSSION Multiple variations are possible for the anomaly of an absent CCA with
separate ECA and ICA origins from the arch. Either the right or the left side may be involved …

Bilateral congenital absence of the internal carotid artery was incidentally found in an 11-
year-old boy. Magnetic resonance imaging showed a normal-appearing brain that was …