Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph ___ at 15 :35 is submitted .
    OUTPUT:
    
Tracheostomy tube remains in satisfactory position . There is stable marked cardiac and mediastinal enlargement . There is increasing moderate pulmonary edema . There are likely ayering small effusions , left greater than right . No definite pneumonia is appreciated .