Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The mediastinal and hilar contours are unremarkable . Atherosclerotic calcifications are noted in the aortic knob . Pulmonary vasculature is not engorged . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . S - shaped scoliosis of the thoracolumbar spine is again noted . Fractured posterior fusion hardware within the thoracolumbar spine is incompletely imaged but visualized aspect of the hardware appears grossly unchanged compared to the previous exam .
    OUTPUT:
    
No acute cardiopulmonary abnormality .