Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Persistence of substantial opacities in the left lower lung base , likely due to a combination of aspiration and compressive atelectasis , better assessed on CT Chest from ___ . Moderate atelectatic changes are seen in the right lower lung base . The heart size is unchanged . No new focal consolidations are seen . No pneumothorax or pulmonary edema .
    OUTPUT:
    
1 . Persistence of substantial opacities in the left lower lung base are likely due to combination aspiration and compressive atelectasis , better assessed on CT Chest from ___ .