Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy . The heart size is normal . The hilar and cardiomediastinal contours are within normal limits . The lungs are hyperinflated , likely reflecting chronic obstructive disease . The central pulmonary vessels are prominent , however , there is no interstitial edema . A left basilar density may reflect a consolidation with a possible effusion . There is no pneumothorax .
    OUTPUT:
    
Left lower lobe density concerning for pneumonia . Updated findings were discussed by Dr . ___ with Dr . ___ ___ telephone at 7 :34 AM on ___ .