Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA AND LATERAL VIEWS OF THE CHEST . A new left lower lobe heterogeneous opacity slightly obscures the left hemidiaphragm . The upper lung zones are clear . There is no pleural effusion or pneumothorax . The cardiac , mediastinal , and hilar contours are normal . There is colonic interposition under the right hemidiaphragm .
    OUTPUT:
    
Left lower lobe pneumonia . These findings were discussed with Dr . ___ at 4 o'clock p .m . on ___ by telephone .