Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post coronary artery bypass graft surgery . A dialysis catheter again terminates in the upper atrium . The heart is mildly enlarged . The mediastinal and hilar contours appear unchanged . There are similar patchy linear opacities in the left mid lung as well as right lung opacities with a moderate pleural effusion in the right costophrenic angle that may be loculated to some degree . A posterior wedge - like opacity is nonspecific but suggests additional loculated fluid as a likely etiology or round atelectasis . This opacity seems to correspond to perhaps increased fluid associated with left lower lobe atelectasis or scarring seen on the prior CT . Comparing the right - sided pleural effusion directly to the most recent prior study , there has been no definite change allowing for differences in technique .
    OUTPUT:
    
Essentially stable appearance of the chest including moderate right - sided pleural effusion with suspected loculation and associated opacity , probably compatible with atelectasis .