Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided PICC line terminates in the lower superior vena cava . The patient is status post coronary artery bypass graft surgery . The cardiac , mediastinal and hilar contours appear unchanged . There is no pleural effusion or pneumothorax . Patchy opacity in the left lower lobe is most consistent with minor persistent atelectasis . Elsewhere , the lungs appear clear .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .