Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip terminates approximately 5 .3 cm from the carina . An orogastric tube tip terminates below the diaphragm , off the inferior borders of the film . The heart size is borderline enlarged . Mediastinal contours are unremarkable . There are low lung volumes . This results in crowding of the bronchovascular markings . Patchy opacities at the lung bases may reflect atelectasis though infection or aspiration can not be excluded . A possible small left pleural effusion may be present . No pneumothorax is identified .
    OUTPUT:
    
1 . Standard positioning of the endotracheal tube and orogastric tube . 2 . Low lung volumes , which results in crowding of bronchovascular structures . No overt pulmonary edema . 3 . Patchy opacities at the lung bases likely reflect atelectasis , though infection or aspiration can not be excluded .