Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is mildly enlarged . The mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . There is no focal consolidation , pleural effusion or pneumothorax . Minimal atelectasis is noted in the left lung base . Mild scarring is seen within the lung apices . Moderate multilevel degenerative changes again noted in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .