Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph ___ at 06 :05 is submitted .
    OUTPUT:
    
Nasogastric tube seen coursing below the diaphragm with the tip not identified . Right subclavian central line unchanged in position . Lung volumes are somewhat low with bibasilar patchy opacities which could reflect atelectasis , although pneumonia or aspiration can not be excluded . The vasculature appears cephalized consistent with pulmonary venous hypertension but no overt pulmonary edema is appreciated . No pneumothorax is seen . Overall cardiac and mediastinal contours are stable .