Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette appears enlarged even accounting for AP technique . There is a focal area of increased opacity at the right lung base , which could reflect atelectasis or overlying vessels ; however , in the appropriate clinical setting , this could also represent early developing pneumonia . There is evidence of increased venous pressure . Blunting of the right costophrenic angle could be related to a small amount of pleural fluid . No definite pneumothorax identified .
    OUTPUT:
    
Increased focal opacity at the right lung base , which could reflect atelectasis or overlying vessels . However , in the appropriate clinical setting , developing pneumonia should also be considered .