Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Large areas of confluent airspace opacities in the left lung are minimally improved since ___ . Minimal opacity at right lung base , likely atelectasis is unchanged since ___ . Right mid and upper lung is clear . There is no pneumothorax or pleural effusion . Heart size is normal . Minimal widening along the right upper paramediastinum and irregularity is from known radiation - induced scarring and unchanged since at least ___ .
    OUTPUT:
    
Multifocal airspace opacities in the left lung , minimally improved since ___ . Minimal opacity at the right lung base , likely atelectasis is unchanged . No pneumothorax . Stable right upper paramediastinal fibrosis .