Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac size is normal . Mediastinal contours are stable . Right shunt catheter is again noted . Left subclavian catheter tip is in the lower SVC unchanged . Aside from linear left lower lobe atelectasis , the lungs are clear . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
No acute cardiopulmonary abnormality