Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Heart size remains severely enlarged . Pulmonary arteries also are massively enlarged compatible with pulmonary arterial hypertension , unchanged . There is mild pulmonary edema , with small right pleural effusion , as seen on the previous exam . Bibasilar atelectasis is re - demonstrated . There is no pneumothorax . Clips in the right upper quadrant the abdomen indicate prior cholecystectomy .
    OUTPUT:
    
Severe cardiomegaly with mild pulmonary edema and small right pleural effusion . Bibasilar atelectasis . Massive pulmonary arteries compatible with pulmonary arterial hypertension .