Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube terminates 4 .1 cm from the carina . The enteric tube courses below the diaphragm and outside of the field of view . Low lung volumes and rightward rotation somewhat limit evaluation . There is no focal consolidation , pleural effusion , or pulmonary edema . Bibasilar opacities likely represent atelectasis related to low lung volumes . There is a mildly displaced fracture of the right anterior sixth rib . Mild contour irregularity of the seventh rib may represent an additional fracture .
    OUTPUT:
    
1 . Standard positioning of endotracheal and enteric tubes . 2 . Mildly displaced right anterior sixth rib fracture and possible additional right anterior seventh rib fracture . 3 . Low lung volumes and positioning limit assessment . There is bibasilar atelectasis . The lungs are otherwise grossly clear .