Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP supine view of the chest demonstrates low lung volumes , lungs are essentially clear . No pleural effusion , focal consolidation or pneumothorax . Endotracheal tube is in place , projecting at the level of the carina and coursing towards the right main bronchus . The nasogastric tube terminates within the stomach . There is no pulmonary edema . Aortic arch calcifications are noted . Descending aorta is slightly tortuous . The partially imaged upper abdomen is unremarkable .
    OUTPUT:
    
Endotracheal tube at the level of the carina coursing towards the right main bronchus . Retraction by several centimeters is recommended . Low lung volumes . Clear lungs . Findings discussed with Dr . ___ at 3 : 15 a .m . ___ at the time of discovery .