Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mild - to - moderately enlarged . The mediastinal and hilar contours appear unchanged . There is mild perihilar fullness bilaterally that appear similar to the prior examination . There are small - to - moderate suspected bilateral pleural effusions with a layering effect . Differences in orientation make it difficult to compare directly to the prior examination , but these are probably unchanged or perhaps slightly increased . Patchy right lower lobe opacity may be attributable to atelectasis but is not specific . If anything , a retrocardiac opacity in the left lower lobe has become somewhat more dense and could be seen with compressive atelectasis although pneumonia can not be excluded by this examination .
    OUTPUT:
    
Bilateral pleural effusions and basilar opacities that could be seen with atelectasis , probably increased and substantial on the left , although pneumonia can not be excluded . Correlation with clinical factors suggested . No overt evidence for congestive heart failure .