Cases of vertebral arterial variations with an emphasis on its development (original) (raw)
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Variation in the Course of Vertebral Artery: A Case Report
2014
The study demonstrate a case of a cadaver in which right vertebral artery had an unusual course. It originates from the right subclavian artery and enters the foramen transversarium of the fourth cervical vertebra, while the left vertebral artery had normal course. The morphometric measurements of the arteries were performed. Anatomic and morphological variations of the vertebral artery are of immense importance in surgery, angiography and all non-invasive procedures.
Bilateral Variation in the Origin of Vertebral Artery
During routine dissection we encountered variations in relation to origin of vertebral artery bilaterally. On right side vertebral artery arise from brachiocephalic trunk and on left side vertebral artery arises from arch of aorta. Vertebral artery is an important part of the circle of willis and it is important to posterior cerebral circulation. Abnormal origin of vertebral artery ''may favor cerebral disorders because of alterations in cerebral hemodynamics. An understanding of the variability of vertebral artery remains most important in angiography and surgical procedures where an incompatible knowledge of anatomy can lead to complications.
An unusual variation of vertebral artery
International Journal of Anatomical Variations, 2014
Vertebral artery is the first branch of subclavian artery which joins other sided vertebral artery to form basilar artery and becomes important source of blood supply to the brain. The complex embryological development of vascular system often results in myriad of clinically relevant variations. Variation in the origin of right vertebral artery was found in 70-year-old female embalmed cadaver during routine dissection of neck in the department of anatomy. It was originating from right common carotid artery and its further course was as usual. Origin and course of left vertebral artery showed no variation. Such type of variation is encountered very rarely. Awareness of such variations in origin is surgically important and clinically significant during diagnostic and interventional angiographic procedures.
A study of variations in the origin of vertebral artery and its clinical significance
Objectives: An understanding of anatomy is essential to surgeons and knowledge of variations is of practical importance. The anatomic and morphologic variations of great vessels are significant for diagnostic and surgical procedures in the neck and thorax region. Vertebral artery is a branch of subclavian artery, generally arising from the first part of subclavian artery on both the sides. Multiple variations in the origin of vertebral artery have been reported in the literature, most common being directly from the arch of aorta, as a branch of thyrocervical trunk, as a branch of common carotid or external carotid artery. Material and methods: Study was carried out among 30 formalin fixed cadavers procured from Dr. D.Y. Patil Medical College, to note down the variations in the origin of vertebral artery. Results: Origin of right vertebral artery was normal in all the cases while the left vertebral artery showed varied origin. Conclusions: Anomalous vertebral artery origins may predisposes an individual to cerebrovascular disorders.
Bilateral Variation in the Origin and Course of the Vertebral Artery
Anatomy Research International, 2012
Understanding the great vessels of the aortic arch and their variations is important for both the endovascular interventionist and the diagnostic radiologist. An understanding of the variability of the vertebral artery remains most important in angiography and surgical procedures where an incomplete knowledge of anatomy can lead to serious implications. In the present case, a bilateral variation in the origin and course of vertebral artery was observed. The left vertebral artery took origin from the arch of aorta and entered the foramen transversarium of the fourth cervical vertebra. The right vertebral artery took origin from the right subclavian artery close to its origin and entered the foramen transversarium of the third cervical vertebra. The literature on the variations of the artery is studied and its clinical significance and ontogeny is discussed.
International journal of current research and review, 2013
An understanding of the variability of vertebral artery remains most important in angiography and surgical procedures where an incompatible knowledge of anatomy can lead to complications. Vertebral artery is important artery to supply posterior part of cerebral circulation. During routine dissection of cadaver for undergraduate dissection we encountered variations in relation to origin of left vertebral artery. Variant left vertebral artery was arising from arch of aorta directly. In the right side of the same cadaver length of vertebral artery was reduced due to increase in the length of brachiocephalic trunk.
A variable origin of the vertebral artery
Bratislavské lekárske listy, 2008
This study presents and describes the variation of the vertebral artery arising from the aortic arch as a case report. This variation was found in one of the cadavers at the Institute of Anatomy of Medical Faculty of Comenius University in Bratislava. Anomalous arising was discovered during the student's dissection of thorax and abdomen. Non standard arising of the vertebral artery is compared to the standard arising in the anatomical literature and atlases. The variable arising was confronted to the possible variations of the vertebral artery reported in literature (Fig. 4, Ref. 9). Full Text (Free, PDF) www.bmj.sk.
Case Report on Variant Origin of the Vertebral Artery
MOJ Anatomy & Physiology
During routine dissection, of the thoracic cavity of 70years old donated embalmed male cadaver in the Department of Anatomy, K.J. Somaiya Medical College, Sion, Mumbai, India, we observed four branches arising from the superior surface of the arch of aorta. First branch on the right side was the brachiocephalic trunk giving out its two branches-right common carotid artery and right subclavian artery. The second branch found was the left common carotid artery, the third branch was the left vertebral artery and the fourth branch was the left subclavian artery. The vertebral artery is vital to posterior cerebral circulation. The left vertebral artery of aortic origin was found to be narrower and longer as compared to the vertebral artery of subclavian origin. No other associated congenital anomaly was observed. The photographs of the variant origin of the vertebral artery were taken for proper documentation. Knowledge of a morphological variation of the left vertebral artery is considerably important for all diagnostic and surgical procedures in the head and neck region. The present case report should be of significance for clinicians with regard to vascular variations in the neck and thoracic region.
Abnormal origin of the left vertebral artery: A case study
In this paper we are presenting an anatomical variation of the left vertebral artery originating from the arch of aorta. This variation was found in one of the male cadaver during routine dissection while teaching for UG students. In this case we found four branches arising from arch of aorta. First branch on the right side was brachiocephalic trunk with two branches, namely right common carotid artery and right subclavian artery. The second branch was the left common carotid artery, the third branch was the left vertebral artery and fourth one was left subclavian arteries. We traced the branches and confirmed them by their course.
A Study on the Variant Origins of Vertebral Artery
2014
Background: Vertebral artery is the first branch of subclavian artery .It is an important source of blood supply to the brain. Accurate knowledge of normal and variant arterial anatomy of vertebral artery is important for clinical procedures and vascular radiology as its injury may occur at the time of cervical fracture or dislocation. The present study was done to study variant origins of vertebral artery. Aims & Objective: To study the variant origins of vertebral artery. Materials and Methods: The present study was done on thirty human cadavers to know the variant origin of vertebral arteries by Dissection method. Results: In the present study, variant origin of Left Vertebral Artery (LVA) was found in one male (3.33%) cadaver out of 30 cadavers. There was aortic origin of Left Vertebral Artery (LVA) instead of left subclavian artery. Conclusion: An understanding of anomalous origin of vertebral artery is very much important while performing diagnostic and interventional angiogra...