Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi - supine chest radiograph ___ at 04 : 50 is submitted .
    OUTPUT:
    
Tracheostomy tube remains in satisfactory position . A right large bore dual lumen catheter is unchanged in position with the tip in the distal SVC . Left internal jugular central line has its tip in the mid SVC unchanged . Overall cardiac mediastinal contours are stable . Layering bilateral effusions with continued collapse of the left lower lobe . Aeration at the right lung base has somewhat improved . There is resolving mild pulmonary edema .