Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest PA and lateral radiograph demonstrates unremarkable mediastinal , hilar and cardiac contours . Patient is intubated with endotracheal tube terminating 2 .8 cm above the carina . Nasogastric tube is coiled within the fundus . Bilateral low lung volumes identified with increased opacification within the right lung base compared to next preceding study , may represent atelectasis , though given unresponsive state , aspiration is a consideration . No pleural effusion or pneumothorax evident .
    OUTPUT:
    
Endotracheal tube 2 .8 cm above the carina . Well - positioned nasogastric tube . Increased opacification of right lung base , atelectasis versus aspiration pneumonitis .