Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is intubated . The endotracheal tube terminates 1 .5 cm above the carina . An introducer catheter terminates in the upper superior vena cava . An endoscope passes through the whole esophagus and imaged upper part of the stomach . No inflated balloon is visualized . The lung volumes are low . The heart shows a left ventricular configuration , as before . There is new retrocardiac opacification which is very commonly due to atelectasis . Coinciding small pleural effusion is not excluded on the left . None is demonstrated on the right side . Perihilar opacity suggests mild fluid overload .
    OUTPUT:
    
Endoscope traversing the stomach and visualized upper part of the stomach ; no inflated balloon visualized . Findings suggests mild vascular congestion and increasing left basilar opacification , probably due to atelectasis . Endotracheal tube seated slightly lower than before ; it may be appropriate to retract it slightly .