Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison with chest radiograph from ___ , lung volumes have improved . Atelectasis in the left lobe has mildly improved . There is mild pulmonary vascular congestion without evidence of cardiac decompensation . Heart size is increased , which could be due to cardiomegaly without effusion or pericardial effusion . Left - sided pacemaker and dual pacing wires following their expected course to the right atrium and ventricle .
    OUTPUT:
    
No evidence of pulmonary edema . Mildly improved probable left lower lobe atelectasis . Increased cardiomegaly and / or pericardial effusion .