Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A dual - lead pacemaker device has leads terminating in the right atrium and ventricle , respectively . The lung volumes are low . The heart appears mild - to - moderately enlarged . Allowing for differences in technique , the mediastinal and hilar contours appear unchanged . Perihilar fullness and a mild - to - moderate interstitial abnormality are very similar to the prior examination , so there has been no acute change but findings suggest mild - to - moderate interstitial pulmonary edema . What is new on this study is a patchy new left basilar opacity , but not specific . Pneumonia could be considered , but the location and context are typical for atelectasis . Small pleural effusions appear new .
    OUTPUT:
    
Similar findings suggesting mild - to - moderate interstitial pulmonary edema . New small bilateral pleural effusions and left basilar density , atelectasis versus pneumonia .