Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided catheter identified with tip projecting over the right brachiocephalic vein . There is no pneumothorax seen based on a supine film . The cardiomediastinal silhouette is within normal limits . Atherosclerotic calcifications are noted at the aortic arch . No acute osseous abnormalities , degenerative changes seen at the shoulders bilaterally .
    OUTPUT:
    
Right - sided central venous catheter tip projects over the upper mediastinum . No visualized pneumothorax on this supine film .