Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is mildly enlarged with coronary arterial stents visualized . The aorta is tortuous and demonstrates calcifications at the aortic knob . The pulmonary vascularity is not engorged . Linear opacities within the lingula likely reflect subsegmental atelectasis or scarring . No focal consolidation , pleural effusion or pneumothorax is present . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .