Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: This study is presented on ___ for dictation . A right internal central jugular venous catheter again terminates in the superior vena cava . There is overall slightly better aeration of the chest but similar heterogeneous multifocal opacities with suspected pleural effusions . Some improvement may be due to decrease in edema .
    OUTPUT:
    
Mild improvement in aeration , possibly due to decreased edema superimposed on severe bilateral heterogeneous opacification which is otherwise unchanged .