Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The only change from yesterday 's x-ray is new subtle heterogenous opacity at the right lung base which could either represent early pneumonia , aspiration or atelectasis . Left lung base minimal opacities are unchanged since ___ and are probably related to atelectasis . Mediastinal and cardiac contours are normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
New mild heterogeneous opacities at right lung base are nonspecific and could be early pneumonia , aspiration or atelectasis . The medical team was paged .