Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest film ___ at 16 :00 is submitted .
    OUTPUT:
    
Interval intubation with the endotracheal tube having its tip approximately 3 cm above the carina . Right internal jugular central line has its tip in the distal SVC near the cavoatrial junction . Overall cardiac an mediastinal contours are likely unchanged given marked patient rotation on the current study . Lung volumes are lower with patchy bibasilar opacities most likely reflecting atelectasis , although superimposed pneumonia can not be excluded . There is crowding of the pulmonary vasculature with no evidence of pulmonary edema . A curvilinear lucency underneath the right hemidiaphragm may be artifactual or but does raise concern of free air . Clinical correlation is recommended and followup imaging may be helpful .