Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided pacemaker device is noted with leads in similar positions , one within the right atrium , and a second terminating near the right ventricular outflow tract . Heart size remains mildly enlarged . The aortic knob is calcified . Pulmonary vasculature is normal . Atelectasis is seen in both lung bases without focal consolidation , pleural effusion or pneumothorax . Mild elevation of the right hemidiaphragm is again noted .
    OUTPUT:
    
No acute cardiopulmonary abnormality .