Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs . Right middle lobe and lingular opacification persist and likely reflect atelectasis . Lateral view shows one of the lower lobes is also involved . There is no pleural effusion or pneumothorax . The heart size is normal .
    OUTPUT:
    
Persistent bilateral atelectasis concerning for an obstructive process . Further evaluation with CT is recommended . Findings were submitted to the critical results dashboard .