Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal opacities , pleural effusion or pneumothorax . The cardiac and mediastinal contours are stable . Cervical hardware is again noted . There is contrast in the renal collecting systems from recent intravenous contrast administration for CT .
    OUTPUT:
    
No acute cardiopulmonary abnormality .