Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The mediastinal and hilar contours are unchanged . The pulmonary vasculature is normal . No focal consolidation , pleural effusion or pneumothorax is present . Minimal subsegmental atelectasis is seen in the lung bases . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .