Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided dual lumen venous catheter is seen with distal tip in the right atrium . The lungs are clear , there is no effusion . The cardiomediastinal silhouette is stable . Atherosclerotic calcifications are noted at the aortic arch . Surgical clips in the right upper quadrant suggest prior cholecystectomy .
    OUTPUT:
    
No acute cardiopulmonary process , no effusion .