Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Ill - defined opacity at the left lung base is concerning for an early left lower lobe pneumonia . Right lung is clear . No pleural effusion or pneumothorax . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Left lower lobe pneumonia . Discussed with Dr . ___ .