Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is slight interval decrease of the right apical pneumothorax since the study from earlier the same day . The patient is status post median sternotomy . Increased opacity at the left lung base is slightly improved . Bilateral midlung areas of linear atelectasis or scarring is also stable . There is stable mild cardiomegaly . Small bilateral pleural effusions .
    OUTPUT:
    
Slight interval decrease of known right apical pneumothorax . Slightly improved left lower lobe atelectasis . Stable mild cardiomegaly .