Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The aorta is markedly tortuous , unchanged . Atherosclerotic calcifications are noted at the aortic knob . Mediastinal and hilar contours are unchanged . Pulmonary vasculature is normal . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is detected . Moderate multilevel degenerative changes are seen within the thoracic spine with mild loss of height of ___ mid thoracic vertebral bodies , not changed from ___ .
    OUTPUT:
    
No acute cardiopulmonary abnormality .