Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . This accentuates the cardiac silhouette size , which is top normal . Mediastinal and hilar contours are unremarkable except for atherosclerotic calcifications at the aortic knob . Pulmonary vascularity is not engorged . The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . Mild degenerative changes are seen in the thoracic spine . Partially imaged is hardware within the right humeral head .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Low lung volumes .