Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest film ___ at 17 41 is submitted .
    OUTPUT:
    
Endotracheal tube has its tip 4 cm above the carina . A feeding tube is seen coursing below the diaphragm with the tip not identified . Right internal jugular central line unchanged with its tip in the distal SVC near the cavoatrial junction . Cardiac and mediastinal contours are unchanged . Lung volumes are slightly lower resulting in crowding of the vasculature . Overall , the mild edema is improving . Probable layering right effusion . No pneumothorax .