Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Median sternotomy wires intact and aligned . Left pectoral pacemaker with leads terminating in the right atrium , right ventricle , and left coronary sinus . Stable cardiomegaly with pulmonary vascular congestion . No evidence of acute , focal pneumonia .
    OUTPUT:
    
No evidence of pneumonia .