Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single lead left - sided pacemaker is again seen with leads extending to the expected location of the right ventricle is again seen with curve at that the distal portion , similar to ___ and ___ exams . The exam was obtained in relatively AP lordotic view . The cardiac silhouette is enlarged and there are low lung volumes . There is mild bibasilar atelectasis without definite focal consolidation seen . No large pleural effusion or pneumothorax .
    OUTPUT:
    
Enlargement of the cardiac silhouette and low lung volumes .