Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes accentuate cardiac silhouette , limiting accurate assessment of overall size . Aorta is mildly tortuous and slightly prominent for a patient of this age . There is no focal lung consolidation . There is no pleural effusion or pneumothorax . There is no acute osseous abnormality .
    OUTPUT:
    
No evidence of pneumonia . Prominent thoracic aorta for a patient of this age , possibly extension weighted by expiratory phase of respiration . However , if clinical symptomatology suggests the possibility of aortic dissection , CTA of the chest would be recommended .