Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Mild cardiomegaly is re - demonstrated . The mediastinal contour is unchanged . Compared to the previous radiograph , mild pulmonary edema is slightly worse in the interval , and there is interval increase in size of small bilateral pleural effusions . Mild compressive atelectasis is seen in the lung bases . No pneumothorax is present . Moderate multilevel degenerative changes are noted throughout the thoracic spine .
    OUTPUT:
    
Mild pulmonary edema , slightly worse from the previous radiograph , with increased size of small bilateral pleural effusions .