Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable frontal upright view of the chest was obtained . The patient appears slightly rotated . Given this , cardiomediastinal silhouette is unchanged . Lungs are slightly low in volume but symmetrically expanded and clear . There is no focal consolidation , pleural effusion or pneumothorax . Surgical clips project over the right upper quadrant . Biliary stents are also noted .
    OUTPUT:
    
No evidence of pneumonia or pleural effusions .