Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endotracheal tube terminates approximately 5 .5 cm above the level of the carina . An enteric tube terminates below the view of this radiograph . The heart is normal in size , and opacity at the left lung base may reflect atelectasis or aspiration . No pleural effusion or pulmonary edema is seen . Mild central pulmonary vascular congestion is seen .
    OUTPUT:
    
1 . Appropriate position of support lines as described above . 2 . Mild central pulmonary vascular congestion . 3 . Opacity at the left lung base may reflect atelectasis or aspiration .