Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views were provided of the chest . Left chest wall pacer device is again seen with leads extending to the region of the right atrium and right ventricle . Lungs are clear and hyperinflated . No focal consolidation , effusion , or pneumothorax is seen . The heart is mildly enlarged . Mediastinal contour is normal . Bony structures appear intact .
    OUTPUT:
    
No definite signs of pneumonia . Mild cardiomegaly .