Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate clear lungs without pleural effusion , or pneumothorax . The cardiac silhouette is normal in size , the mediastinal contours are normal . Note is made of erosion of the distal right clavicle , unchanged from ___ . Surgical clips are noted in the right upper quadrant .
    OUTPUT:
    
No acute chest abnormality .