Variant Origin of Left Vertebral Artery: Cadaveric Case Report (original) (raw)

Anomalous origin of left vertebral artery

2013

Vertebral artery arises from the upper surface of the first part of subclavian artery on both sides. The morphological variations of the vertebral artery are of immense importance in surgery, angiography and all non-invasive procedures. During the routine dissection of a male cadaver aged about 65 years, we observed a variation in the branching of arch of aorta. The arch of aorta gave off four branches-brachiocephalic trunk, left common carotid artery (CCA), left vertebral artery (LVA) and left subclavian artery. LVA was arising between left CCA and left subclavian artery.The knowledge of variations in the vertebral artery is of great clinical interest to the neurosurgeon and radiologist for diagnostic investigation and surgical procedures of the neck.

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.

Anomalous origin of the left vertebral artery in humans A rare anatomical finding

Context: Anatomical and morphological variations of the aortic arch and its branches are important in relation to thoracic and neck surgery. However, developmental abnormalities of the vertebral arteries are generally considered to be very rare. They have mostly been described in single case reports or small series. Thus, there is a need for further knowledge as an aid in planning surgery on the aortic arch or endovascular interventions. Objective: To report on a case of anomalous origin in the left vertebral artery. Case report: In a male cadaver, a left vertebral artery with its origin in the aortic arch between the left common carotid and left subclavian arteries was observed. Its length was 120 mm, and its diameter was 5.5 mm. It entered the transverse foramen of the third cervical vertebra. Conclusion: Knowledge of the anatomical variation of the origin of the vertebral artery is important not only diagnostically but also in planning surgery on the aortic arch or endovascular interventions.

Variant Origin of Left Vertebral Artery from Aortic Arch: Embryological Basis and A Case Report

Vertebral artery is the first branch of subclavian artery. It merges with the same artery of the opposite side to form basilar artery and becomes one of the important source of blood supply to the brain. Variation in the origin of left vertebral artery was found in 65 year old female during magnetic resonance angiography of the neck vessels. It originated from aortic arch and was longer as compared with the right vertebral artery. Its further course was as usual. Awareness of such variations is important in supra-aortic vascular surgery and is clinically significant during diagnostic procedures like angiographi.

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.

Variation of Origin of Left Vertebral Artery: Phylogenic Correlation and Clinical Implication

International Journal of Medical and Health Sciences, 2013

Variations in the branching pattern of aortic arch are caused by alterations in embryological mechanisms and are implicated in certain clinical manifestations. Anomalous origin of supra aortic arch vessels are common and their detection is important for vascular surgeries of thorax and head and neck. Stenosis of Vertebral Artery (VA) is an important etiological factor for stroke involving posterior cerebrum. Advanced imaging studies like angiograms reveal conditions like VA occlusion prior to surgery. During the course of routine cadaveric dissection for student demonstration a 62 year old male cadaver presented unusual origin of Left Vertebral Artery (LVA). Anomalous of origin and distribution of LVA and its branches can lead to impaired cerebral hemodynamics and cerebral dysfunctions.

Anatomical variation of the origin of the left vertebral artery

Int J Anat Var, 2009

This paper presents and describes the anatomical variation of the left vertebral artery originating from the arch of aorta as a case report. This variation was found in one of the cadavers at the Division of Clinical and Functional Anatomy, Faculty of Medicine, University of Ottawa. During routine dissection of a male cadaver, in the superior mediastinum and the neck we observed an atypical origin of the left vertebral artery. Atypical origin was compared to the typical origin of the left vertebral artery in the anatomical literature. We compared our findings with different possible variations of the origin of the left vertebral artery reported in the literature. The clinical importance of the variation is discussed. © IJAV. 2009; 2: 83-85.