Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a heterogeneous opacification of the left lower lobe . There is probably subtle increase in opacity in the right lower lobe as well . The lungs are otherwise clear . The hilar and cardiomediastinal contours are normal . There is no pneumothorax or pleural effusion . Pulmonary vascularity is normal .
    OUTPUT:
    
Left lower lobe pneumonia . Findings discussed with Dr . ___ by Dr . ___ ___ telephone on ___ at 14 :30 .