Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip is in standard position , terminating approximately 5 .4 cm from the carina . Cardiac and mediastinal contours remain unchanged with the heart size top - normal . There is crowding of bronchovascular structures due to low lung volumes without overt pulmonary edema . Patchy bibasilar airspace opacities likely reflect atelectasis , new in the interval . No large pneumothorax or pleural effusion is detected .
    OUTPUT:
    
Endotracheal tube in standard position . Low lung volumes with bibasilar atelectasis .