Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube ends approximately 4 .9 cm from the carina and is appropriate . Orogastric tube is seen coursing below the diaphragm and ends into the fundus of the stomach . New since yesterday 's radiograph is an ill - defined opacity in the right lower lung either represents aspiration or new atelectasis . There are no new changes in the left lung . Heart size , mediastinal and hilar contours are normal . There is no pleural effusion .
    OUTPUT:
    
Ill - defined opacity at the right lung base , new since yesterday reflects either atelectasis or aspiration and requires monitoring or further followup for resolution . No new findings in the left lung .