Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post CABG . Low lung volumes persist . An ETT is seen 3 .3 cm above the carina . An NG tube is seen coiling in the fundus . A right IJ catheter seen with the tip in unchanged position . A left pleural drain is stable . There is mildly increased appearance of a widened mediastinum , which may all be postsurgical , but an enlarging hematoma can not be excluded . Moderate bilateral atelectasis and small to moderate bilateral pleural effusions are stable .
    OUTPUT:
    
There is interval increased appearance of mediastinal widening , which may all be postsurgical but enlarging hematoma can not be excluded .