Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . There is air space consolidation localized within the lingula compatible with pneumonia . There appears to be a tiny right pleural effusion . No evidence of pneumonia within the right lung . Upper lobe lucency is compatible with known emphysema . Post - surgical changes with right apex and right perihilar architectural distortion is stable and related to prior right upper lobectomy . Heart size could not be assessed . Bony structures are intact .
    OUTPUT:
    
Opacity in the lingula compatible with pneumonia . Post - surgical changes within the right lung .