Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear of focal consolidation , effusion or vascular congestion . There is abnormality of the cardiomediastinal silhouette within extremely tortuous both ascending and descending thoracic aorta . The aortic knob is likely located to the right of the trachea as opposed to its normal position on the left . The trachea is significantly displaced laterally the left and anteriorly . A component of and thoracic aortic aneurysm or potentially a diverticulum of Kommerell is possible . No acute osseous abnormalities identified . No free air seen below the diaphragm .
    OUTPUT:
    
No acute cardiopulmonary process . Extremely tortuous thoracic aorta with probable right - sided aortic arch . Superimposed thoracic aortic aneurysm or diverticulum of Kommerell is also possible and dedicated chest CT is suggested .