Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . There is status post sternotomy and evidence of previous bypass surgery . Moderate cardiac enlargement is present . Thoracic aorta is of ordinary ___ but shows rather extensive calcifications in the wall at the level of the arch . Pulmonary vasculature does not show any upper zone redistribution , interstitial alveolar edema , but bilateral moderate amounts of pleural effusions are still present and blunt the lateral and posterior pleural sinuses . There is no evidence of new discrete pulmonary parenchymal infiltrates of pneumonic nature . No pneumothorax is present in the apical area on the frontal view . When comparison is made with the next preceding portable chest examination of ___ , the at that time observed perivascular haze has regressed .
    OUTPUT:
    
Improving and lesser marked pulmonary congestion but still remaining bilateral pleural effusions and the presence of moderate cardiac enlargement in patient status post sternotomy and bypass surgery . Further dehydration measures are recommended and followup examination may be helpful .