Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates increased opacification of the bilateral bases , right greater than left , which likely represents atelectasis and / or aspiration , but pneumonia could be considered in the appropriate clinical setting . The mediastinum appears wide . The heart is not enlarged . No pneumothorax or pleural effusion . Endotracheal tube ends 4 .9 cm from the carina . Nasogastric tube courses into the stomach and out of the field of view .
    OUTPUT:
    
1 . Increased opacification of the bilateral bases , right greater than left , likely represents atelectasis and / or aspiration . Pneumonia could be considered in the appropriate clinical setting . 2 . Endotracheal tube ends 4 .9 cm from the carina . 3 . Wide mediastinum . Recommend correlation with prior radiographs , should they become available , for additional evaluation .