RIGHT-SIDED AORTIC ARCH WITH ABERRANT LEFT SUBCLAVIAN ARTERY AND DUPLICATION OF SUPERIOR VENA CAVA

Right-sided aortic arch is a rare anatomical variant present in about 0.1% of the adult population.1,2 Half of the cases are associated with an aberrant left subclavian artery (0.05%-0.1%). Right-sided aortic arch with aberrant left subclavian artery is less common than left-sided aortic arch with aberrant right subclavian artery (0.5-2.0%).3,4 A rightsided aortic arch is an anatomic variant resulting from persistence of the right fourth aortic arch and involution of the left. It can be associated with an aberrant left subclavian artery arises from Kommerell’s diverticulum. It is usually asymptomatic and diagnosed incidentally during adult age. A 40-year-old male presented with cough and a hump in the back. The patient was evaluated for scoliosis and plain CT thorax was done.