Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest film ___ at 05 :46 is submitted .
    OUTPUT:
    
Right subclavian central line with its tip in the distal SVC . Tracheostomy tube remains in place . A feeding tube is seen coursing below the diaphragm with the tip not identified . There continues to be a diffuse bilateral airspace process with layering effusions which is not significantly changed . Overall cardiac and mediastinal contours are stable . No obvious pneumothorax is appreciated , although the sensitivity to detect pneumothorax is diminished given semi-erect technique .