Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Pleural effusions are small , and have decreased slightly over the interval . Increased interstitial markings in the bilateral lungs is in keeping with the patient 's history of interstitial lung disease and fibrosis . Persistent asymmetrical elevation of left hemidiaphragm with associated atelectasis at the left lower lobe is unchanged . The heart remains enlarged . The patient is status post median sternotomy .
    OUTPUT:
    
Interval decrease in size of small bilateral pleural effusions .