Type of Article:  Case Report

Volume 6; Issue 1.2 (February 2018)

Page No.: 4939-4942

DOI: https://dx.doi.org/10.16965/ijar.2017.512


A. Perumal *1, K. C. Shanthi 2, K. R. Srinivasan 3.

*1 Associate Professor, Department of Anatomy, Banas Medical College & Research Institute, Palanpur, Gujarat, India.

2 Associate Professor, Department of Anatomy, Vinayaka Missions Kirupananda Variyar Medical College, Salem, Tamil Nadu, India.

3 Professor,  Department of Anatomy, Aarupadai Veedu Medical College & Hospital, Pondy Cuddalore Main road, Bahour Commune Panchayat, Kirumampakkam, Puducherry, India. 

Address of correspondence: Dr. A. Perumal, Associate Professor, Department of Anatomy, Banas Medical College & Research Institute, Palanpur, Gujarat-385001, India. E-Mail: perumal_sas@yahoo.com


Arterial variations are quite common. Many studies had elaborated variations in branching pattern of subclavian artery. Present study illustrates a unique feature of scalenus anterior muscle having two heads of origin and a common trunk for internal thoracic artery (ITA) and thyrocervical trunk (TCT). This rare common trunk passes between two heads of right scalenus anterior. Such rare variation was not reported so far. The rarity of such variation signifies the necessity of the present study. On the left side all branches arose normally from subclavian artery except dorsal scapular artery which originates from second part itself instead of third part which is a quite common variation. The Internal thoracic artery is widely utilized as a great conduit for Myocardial Revascularization. This common truncal origin is of great surgical importance to Cardiothoracic Surgeons, Cardiovascular Surgeons and Interventional Therapy Radiologists.

KEY WORDS: Internal Thoracic Artery, Thyrocervical Trunk, Scalenus Anterior Muscle, Common Trunk for Internal Thoracic Artery, Thyrocervical Trunk.


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Cite this article: A. Perumal, K. C. Shanthi, K. R. Srinivasan. SCALENUS ANTERIOR MUSCLE WITH TWO HEADS ASSOCIATED WITH VARIATION IN THE BRANCHES OF SUBCLAVIAN ARTERY: A RARE PRESENTATION. Int J Anat Res 2018;6(1.2):4939-4942. DOI: 10.16965/ijar.2017.512