Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes . Moderate right pleural effusion is increased since prior . Right lung base opacities likely reflect compressive atelectasis . There is trace left pleural effusion , unchanged . Mild pulmonary edema is new since ___ . More confluent opacity in the left lung base also appears new . Hilar and mediastinal silhouettes are unchanged . Heart is mildly enlarged . Aortic arch calcifications are noted . Pacemaker leads project over right atrium and ventricle . There is no pneumothorax .
    OUTPUT:
    
Moderate right and trace left pleural effusions increased in size since ___ exam . Mild pulmonary edema is new since prior . Bibasilar opacities may relate to pulmonary edema , or represent atelectasis or superimposed infection in the appropriate clinical setting .