Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest film ___ at 15 : 12 is submitted .
    OUTPUT:
    
Nasogastric tube is again seen coursing below the diaphragm with the tip projecting over the stomach . Endotracheal tube has its tip 4 cm above the carina and is now in satisfactory position . Patchy opacities are now seen at both bases which may reflect atelectasis , although aspiration and early pneumonia should also be considered . No obvious pneumothorax is seen . Overall cardiac and mediastinal contours are stable .