Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi - supine chest film ___ at 04 : 11 is submitted .
    OUTPUT:
    
Endotracheal tube has its tip 4 cm above the carina . The right subclavian central line has its tip in the distal SVC . A nasogastric tube is seen coursing below the diaphragm with the tip not identified . Overall cardiac and mediastinal contours are stable . There continues to be bibasilar airspace opacities with associated layering effusions , left greater than right , which may reflect atelectasis or pneumonia . Clinical correlation is advised . No large pneumothorax .