Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . The heart is noted to be mildly enlarged . The dual - lead pacer is unchanged in position with lead tips extending into the right atrium and right ventricle . There is no pneumothorax , pleural effusion , signs of pneumonia or CHF . Bony structures intact .
    OUTPUT:
    
Cardiomegaly , unchanged . No evidence of interval change or pacemaker - related complication .