Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without consolidation , effusion , or pneumothorax . Nodular opacity projecting over the right lung base is most suggestive of a nipple shadow . Right chest wall central venous catheter seen with tip at the RA SVC junction . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities . Chronic changes seen at the distal left clavicle .
    OUTPUT:
    
No acute cardiopulmonary process .