Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube , left PICC line , and enteric tube are unchanged . Heart size is stable . Since the prior study there is increased opacification at the right lung base obscuring the right hemidiaphragm , which may represent the presence of a new pleural effusion or change in patient positioning . Retrocardiac atelectasis is similar . No pneumothorax .
    OUTPUT:
    
New opacification of the right lung base may represent development of a new pleural effusion versus change in patient positioning . Pneumonia should be considered as well .