Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral view of the chest shows left pectoral pacemaker with two leads following the expected course and ending in the right atrium and right ventricle . Lung volume is normal without consolidation or nodules . Cardiomediastinal silhouette is normal . Aortic arch calcifications are due to aortosclerosis . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary processes , expected positioning of left pectoral pacemaker .