Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A series of two radiographs are provided from 2 : 15 and 2 : 24 am . In the interval , the endotracheal tube was advanced . In the later radiograph , the endotracheal tube is appropriately positioned 3 .2 cm above the carina . A right internal jugular central venous line terminates in the right atrium . An orogastric tube traverses the esophagus , into the stomach , and terminates inferiorly out of the field of view . There are unchanged bilateral pleural effusions . Aeration of the right lung has improved , which may reflect more upright positioning . Low lung volumes cause crowding of the pulmonary vasculature . Bilateral lower lobe airspace opacities are unchanged and may reflect atelectasis or aspiration . There is no pneumothorax . The heart size is normal and unchanged .
    OUTPUT:
    
1 . Appropriately positioned endotracheal tube . 2 . Unchanged bilateral pleural effusions with improved aeration of right lung which may be secondary to more upright positioning . 3 . Bibasilar opacities consistent with atelectasis but aspiration can not be excluded .