Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged , but appears stable when compared to prior examination . The hilar and mediastinal contours are within normal limits . Lung volumes are low . Increased linear streaky opacity at the base of the right lung likely relates to atelectasis . There is no focal consolidation concerning for pneumonia . There is no pneumothorax or large pleural effusion .
    OUTPUT:
    
Right base atelectasis in the setting of low lung volumes . No focal consolidation concerning for pneumonia .