Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A small pleural effusion is present at the left base with some associated left basilar linear atelectasis . It is likely similar is size accounting for differences between the PA and AP images . The lungs are otherwise clear without consolidation or edema . There is no pneumothorax . The cardiomediastinal silhouette is unchanged . The aortic arch appears more prominent , likely due to rotation .
    OUTPUT:
    
Stable small left pleural effusion with associated atelectasis .