Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is within normal limits . The mediastinal and hilar contours are unchanged and within normal limits . There is minimal patchy opacity within the right lung base which could reflect atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . Diffuse sclerosis of the osseous structures is unchanged .
    OUTPUT:
    
Minimal patchy opacity in the right lung base . This could reflect atelectasis though infection is not excluded .