Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right IJ central venous catheter terminates at the level of the superior cavoatrial junction , and may just into the right atrium . The layering right pleural effusion with associated right basilar airspace opacity are not appreciably changed . There is new left lung base subsegmental atelectasis . The apparent change in the mediastinal contour is likely due to rotation . There are no new focal consolidations or pneumothorax .
    OUTPUT:
    
New left basilar subsegmental atelectasis with no other significant interval change .