Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest demonstrate well expanded lungs , which are clear . There is no evidence of pulmonary vascular congestion . There is no pneumothorax or pleural effusion . There is mild cardiomegaly . A pacer is seen in the anterior axillary position with intact leads in the expected course to the right atrium and right ventricle . There is no evidence of pneumonia or other abnormality .
    OUTPUT:
    
Essentially normal chest radiograph with no evidence of acute pulmonary process .