Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Left chest wall pacer is seen with lead extending to the region of the right ventricle . Cardiomegaly is noted with mild central hilar congestion . No frank edema . No large effusion or pneumothorax . No focal opacity concerning for pneumonia . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Cardiomegaly , mild central congestion .