Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . New bandlike opacities at the left lung base are most likely due to atelectasis . Similar though less extensive opacities are present at the medial right lung base . There is no consolidation or pleural effusion . There is no pneumothorax . The heart and mediastinum are within normal limits despite the projection .
    OUTPUT:
    
New bibasilar subsegmental atelectasis .