Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Aortic valve replacement is in appropriate position . Aortic calcifications and mitral annular calcifications are unchanged . The median sternotomy wires are intact . Moderate - sized hiatal hernia is stable . Left lower lobe atelectasis adjacent to the hiatal hernia is seen . There is no evidence of pneumonia . There are no pleural effusions or pneumothorax . Mild - to - moderate cardiomegaly .
    OUTPUT:
    
No evidence of pneumonia . These findings were discussed with Dr . ___ at 2 :30 p .m . on ___ by telephone .