Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest film ___ at 19 :37 is submitted .
    OUTPUT:
    
Left subclavian , right PICC line and endotracheal tube are unchanged in position . Lung volumes remain low with layering bilateral effusions and patchy bibasilar airspace disease most likely reflecting compressive atelectasis , although pneumonia can not be excluded . No pneumothorax . No evidence of pulmonary edema . Overall cardiac and mediastinal contours are likely unchanged , although patient is markedly rotated on the current study .