Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP supine portable chest radiograph provided demonstrates interval placement of a left IJ central venous catheter with which is seen terminating in the upper SVC . Lung volumes are low with bibasilar atelectasis . Mild hilar congestion appears increased . Mediastinal prominence likely reflect supine portable technique .
    OUTPUT:
    
Appropriately positioned left IJ central venous catheter . Increasing bibasilar atelectasis and hilar congestion .