Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is similar cardiomegaly . The cardiac , mediastinal and hilar contours appear unchanged . The chest appears hyperinflated . Probably trace bilateral pleural effusions . There is a possible developing opacity at the right lung base , probably in the right lower lobe , although not well seen on the lateral view . Very vague asymmetric opacity is also newly apparently projecting over the left lateral upper lung . A aortic stent graft is partly visible .
    OUTPUT:
    
Concern for possible developing opacities which may indicate pneumonia . Correlation with physical findings and other clinical factors is suggested . Short - term follow - up radiographs may be helpful .