Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual lumen central venous catheter tip terminates in the right atrium , unchanged . Heart size remains mildly enlarged . Mediastinal and hilar contours are similar . There is no pulmonary edema . Patchy opacities are demonstrated in the left lung base , compatible with atelectasis as seen on the previous CT . No pleural effusion or pneumothorax is demonstrated . No acute osseous abnormalities seen . .
    OUTPUT:
    
No acute cardiopulmonary abnormality .