Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Moderate enlargement of the cardiac silhouette remains unchanged . Aorta is diffusely calcified and mildly tortuous . Mild pulmonary edema is slightly improved in the interval . No large pleural effusion , focal consolidation or pneumothorax is present . Atelectasis is noted in the lung bases . Multilevel degenerative changes are again seen in the imaged thoracic spine . Deformity of the left humeral head is compatible with a remote fracture .
    OUTPUT:
    
Mild pulmonary edema .