Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a left internal jugular central venous catheter which terminates in the low SVC without evidence of pneumothorax . There is mild right basilar atelectasis . Otherwise , the lungs are clear . No large pleural effusion seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Interval placement of a left internal jugular central venous catheter without pneumothorax .