Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided dual lumen central venous catheter terminates in the proximal right atrium . Heart size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Subsegmental atelectasis is seen in the lung bases . No focal consolidation , pleural effusion or pneumothorax is present . Clips are seen within the right upper quadrant of the abdomen .
    OUTPUT:
    
Bibasilar subsegmental atelectasis .