Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval placement of a dual - chamber cardiac pacemaker with leads terminating in the right atrium and right ventricle . Lungs are fully expanded . An 8 mm densely calcified granuloma in the posterior right lower lobe is unchanged . Lungs are otherwise clear . No pneumothorax or pleural effusion . Heart size is top - normal to mildly enlarged . Cardiomediastinal and hilar silhouettes are unremarkable . Incidental note made of a moderate hiatal hernia and multiple consecutive posterolateral right rib fractures , likely chronic .
    OUTPUT:
    
Cardiac pacemaker leads are within the expected location without evidence of pneumothorax . Incidental note made of a moderate hiatal hernia .