Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube ends 4 .1 cm above the level of the carina . An enteric catheter courses below the level of the diaphragm , being obscured by the soft tissues of the abdomen more inferiorly . Lung volumes remain low . There is unchanged dense retrocardiac opacification , either atelectasis or infection . Minimal right lower lung atelectasis is not significantly changed . There are no pleural effusions . No pneumothorax is seen . The degree of cardiac enlargement is not significantly changed .
    OUTPUT:
    
1 . Low lung volumes . Unchanged dense retrocardiac opacification , consistent with either atelectasis or infection . 2 . Unchanged minimal right lower lung atelectasis .