Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left subclavian venous access catheter is in unchanged position with tip in SVC . Heart size and mediastinal contours are within normal limits . The lungs are clear . There is no evidence of pleural effusion or pneumothorax . No change from ___ . Osseous structures appear stable .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Stable position of left subclavian venous access catheter .