Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Left chest wall dual lead pacer is again noted with leads extending the region the right atrium and right ventricle . The heart is mildly enlarged . No convincing signs of edema or pneumonia . Mild hilar congestion is suspected . Mediastinal contour is normal . Bony structures are intact .
    OUTPUT:
    
Mild cardiomegaly and hilar congestion . No overt signs of pneumonia .