Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Atherosclerotic calcifications are noted at the aortic knob . Mediastinal and hilar contours are unchanged . Pulmonary vasculature is not engorged . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . No acute osseous abnormalities demonstrated . Radiopaque densities projecting over the upper abdomen are external to the patient . Dextroscoliosis of the thoracic spine is re - demonstrated .
    OUTPUT:
    
No acute cardiopulmonary abnormality .