Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single lead pacemaker device terminates in the right ventricle . The patient is status post sternotomy . The cardiac , mediastinal and hilar and hilar contours appear stable . There is no pleural effusion or pneumothorax . The lungs appear clear . Kyphosis is again mildly exaggerated in association with mild loss in height of two mid thoracic vertebral bodies , chronic findings without change .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .