Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison with chest radiograph from 2 days earlier , lung volumes have improved . Heterogeneous area of opacification in the left lower lobe suggests pneumonia . Mild bibasilar atelectasis . Bilateral pleural plaques reflect prior asbestos exposure . Mediastinal and cardiac silhouettes are stable .
    OUTPUT:
    
1 . Probable left lower lobe pneumonia . Recommend follow - up chest radiograph in ___ weeks following antibiotic therapy to assess for resolution . 2 . Bilateral pleural plaques reflect prior asbestos exposure .