Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Lungs are essentially clear except for minimal atelectasis in the lower lobes . No focal consolidation , pleural effusion or pneumothorax is present . Moderate degenerative changes with anterior osteophyte formation seen in the lower thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .