Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . A small to moderate size hiatal hernia is seen . Minimal atherosclerotic calcifications are noted at the aortic knob . Hilar contours are normal , and pulmonary vasculature is unremarkable . Minimal atelectasis is seen on the lung bases without focal consolidation . No pleural effusion or pneumothorax is present . Moderate multilevel degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Small to moderate size hiatal hernia .