Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is enlarged . An ET tube terminates 5 .8 cm above the carina . An orogastric tube terminates within the stomach . The lung volumes are markedly low , resulting in bronchovascular crowding . No pneumothorax or large pleural effusion is seen . There is a left retrocardiac opacity likely representing atelectasis , although an underlying consolidation can not be entirely excluded .
    OUTPUT:
    
1 . ET tube terminating 5 .8 cm above the carina . Orogastric tube terminating within the stomach . 2 . Left retrocardiac opacity , likely atelectasis in the setting of very low lung volumes .