Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube terminates 5 .6 cm above the carina . A nasogastric tube courses into the stomach and inferiorly beyond the film . There is no significant pneumothorax . Small bilateral pleural effusions are present . Lung volumes remain low , with bibasilar atelectasis . The diaphragm is not well visualized , and a curvilinear lucency at the right lung base could represent residual aerated lung , colonic interposition , or pneumoperitoneum . Mild cardiomegaly and central venous congestion are unchanged .
    OUTPUT:
    
Questionable lucency at the right lung base . Recommend repeat upright and , if possible , lateral CXR . This was called to Dr . ___ on ___ at 10 :46 a .m .