Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Streaky opacity at the right lung base is most likely atelectasis . Left lung is clear . No sizable pleural effusion or pneumothorax . Heart size is likely normal , accounting for portable technique .
    OUTPUT:
    
Probable atelectasis at the right lung base . If clinically indicated , this could be re-evaluated with a PA and lateral CXR .