Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest wall pacemaker in unchanged position with leads in the expected location of the right atrium and right ventricle . Mild enlargement of the cardiac silhouette is stable from ___ . Unchanged linear opacity at the left lung base consistent with the atelectasis . No focal consolidation , pleural effusion or pneumothorax .
    OUTPUT:
    
Stable mild cardiomegaly and left lower lobe atelectasis with no pneumonia or signs of congestive heart failure