Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest . NG tube terminates in the lower esophagus . Endotracheal tube terminates 3 .6 cm above the carina . Catheter of a left chest wall port , which has been accessed , terminates in the lower SVC . Patient rotation limits evaluation of the cardiomediastinal silhouette . There is asymmetric elevation of left hemidiaphragm . Retrocardiac opacity could represent atelectasis or infection . No substantial pleural effusion or pneumothorax .
    OUTPUT:
    
Left base opacity could represent atelectasis or infection . NG tube terminates in the lower esophagus .