Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is within normal limits . There is minimal atelectasis at the lung bases . No focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities . No subdiaphragmatic free air is present .
    OUTPUT:
    
No radiographic evidence for pneumonia . No subdiaphragmatic free air .