Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are no prior films in our system for comparison . The ET tube is about 2 cm from the carina . The NG tube courses below the diaphragm with the tip off the film . Cardiomediastinal and hilar contours are normal . There are overall low lung volumes . There is a left retrocardiac opacity as well as a right basilar patchy opacity .
    OUTPUT:
    
1 . ET tube 2 cm from the carina , which should be withdrawn by approximately 2 cm . 2 . Left retrocardiac opacity which may represent atelectasis or aspiration . 3 . Right basal consolidation consistent with atelectasis .