Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Demonstrates stable enlarged cardiac silhouette with a left - sided single - lead pacemaker with tip terminating in the right ventricle . Low lung volumes are noted with stable bibasilar atelectasis . No focal opacities concerning for pneumonia present . No pleural effusion or pneumothorax is evident . Evaluation of the ribs is limited due to body habitus as well as patient position . No displaced rib fracture evident .
    OUTPUT:
    
Severely limited evaluation of the ribs . If continued concern for rib fracture , recommend dedicated rib series .