Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube terminates 3 .2 cm from the carina . Enteric tube is in the stomach . There is no pneumothorax . The lungs are normally expanded with mild atelectasis at the left base . There is left retrocardiac opacity . Heart size is normal . The mediastinal and hilar contours are unremarkable . The aortic arch is calcified . There is no pleural effusion .
    OUTPUT:
    
1 . ET tube and enteric tube in appropriate position . 2 . Left retrocardiac opacity could reflect atelectasis , however underlying pneumonia should be considered in the appropriate clinical settings . Followup radiographs may be helpful .