Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip is in standard position , terminating approximately 4 .6 cm from the carina . Enteric tube courses below the left hemidiaphragm into the stomach and off the inferior borders of the film . Heart size is mildly enlarged . Mediastinal and hilar contours are unremarkable . Bibasilar airspace opacities , more severe on the left , may reflect areas of atelectasis though aspiration or infection can not be completely excluded . Small left pleural effusion also may be present . There is no pneumothorax . No pulmonary vascular congestion is demonstrated .
    OUTPUT:
    
1 . Standard positioning of endotracheal and enteric tubes . 2 . Bibasilar opacities , more pronounced on the left , which could reflect areas of atelectasis though infection or aspiration are additional possibilities . A small left pleural effusion may be present .