Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate an opacification with air bronchograms in the left lower lobe . There is no pleural effusion or pneumothorax . The heart size is top normal . The cardiomediastinal silhouette is otherwise within normal limits .
    OUTPUT:
    
Left lower lobe pneumonia . Findings were relayed to Dr . ___ by phone at 11 :02 a .m . on ___ .