Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heterogeneous left lower lobe opacities were better evaluated on recent chest CTA from ___ , likely atelectasis versus early infarction given multiple pulmonary emboli seen on prior CT . These opacities have not changed significantly compared to the CT , which was performed approximately 20 minutes earlier . The lungs are otherwise clear . The heart size is top normal . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen .
    OUTPUT:
    
Heterogeneous left lower lung opacities , likely atelectasis versus early infarction , better evaluated on recent CT from ___ . Of note , multiple left lower lobe pulmonary emboli were seen on recent CT .