Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Central venous catheter projects from the inferior field of view with tip in the right atrium . The lungs are clear . The cardiomediastinal silhouette is within normal limits . Aortic nipple is incidentally noted . No acute osseous abnormalities . Left upper extremity graft is noted as well as right upper extremity vascular calcifications versus graft .
    OUTPUT:
    
No acute cardiopulmonary process .