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CASE REPORT
Year : 2014  |  Volume : 21  |  Issue : 2  |  Page : 80-84

Aberrant right subclavian artery in association with common trunk of both carotid arteries: Diagnosis with CT


Department of Radiodiagnosis, Government Medical College and Associated Group of Hospitals, Kota, Rajasthan, India

Correspondence Address:
Dr. Dharmraj Meena
Department of Radiodiagnosis, Government Medical College and Associated Group of Hospitals, Kota - 324 001, Rajasthan
India
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DOI: 10.4103/1115-1474.134615

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The aberrant right subclavian artery (ARSA) is an anatomical abnormality encountered by anatomists and pathologists and more recently radiologists, interventional cardiologists and thoracic surgeons. The incidence of ARSA is 0.2-2% in the population. Cases of an ARSA in retro-tracheal and retro-oesophageal courses in association with common trunk of both carotid arteries have been rarely reported in literature. We reported the case of a retro tracheal RSCA, which originated distally along the left aortic arch and coursed behind the trachea and the oesophagus, diagnosed on computerized tomography angiography (CTA). This was associated with a rare variant of the aortic arch; in which the arch had a common trunk as first branch, which subsequently bifurcated to give the right and left common carotid arteries without any aneurysmal dilatation.


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