Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart remains mild to moderately enlarged . The aorta demonstrates aortic arch calcifications . Mediastinal and hilar contours are unchanged . The previous pattern of mild pulmonary edema has nearly resolved . Persistent opacification in the left lung base likely reflects a combination of moderate pleural effusion with adjacent atelectasis , not significantly changed from the prior exam . There are no new areas of focal consolidation . No pneumothorax is demonstrated . Degenerative changes of the left humeral head are noted . Compression deformity of the L1 vertebral body is re - demonstrated .
    OUTPUT:
    
Interval improvement in previous pattern of mild pulmonary edema . Persistent moderate left pleural effusion and adjacent atelectasis in the left lung base .