Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . There is no new lung consolidation . Mild cardiomegaly is stable in this patient with prior sternotomy for CABG . Left - sided pacer defibrillator is in adequate position . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
There is no evidence of pneumonia .