Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior study , a right - sided pleural effusion , with right basilar atelectasis is new . However , pulmonary edema has improved . The prior retrocardiac consolidation has also resolved , suggesting clearing of a mucous plug . Mild cardiomegaly is unchanged . No pneumothorax . Interval removal of the NG tube .
    OUTPUT:
    
Improved pulmonary edema , with improvement of a prior retrocardiac consolidation , suggesting clearing of a prior mucous plug .