Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Left - sided dual - chamber pacemaker device is noted with leads terminating in the right atrium and right ventricle . Moderate to severe cardiomegaly is not substantially changed in the interval . Mild pulmonary edema appears slightly worse from the previous exam . No large pleural effusion or pneumothorax is seen . Atelectasis is demonstrated in the lung bases .
    OUTPUT:
    
Slight interval worsening of mild pulmonary edema . Similar moderate to severe cardiomegaly .