Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided central venous catheter with tip projecting over the right atrium is similar compared to prior . The lungs are clear without focal consolidation , effusion , or edema . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities . Rounded calcific density in the right upper quadrant is unchanged .
    OUTPUT:
    
No acute cardiopulmonary process .