Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left pectoral pacer is unchanged in position , with leads terminating in the right atrium and right ventricle . Median sternotomy wires are intact . The prostatic aortic valve is re-demonstrated . No evidence of pneumonia , pulmonary edema or pleural effusions . Cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
No evidence of pneumonia .