Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP view of the chest provided . An endotracheal tube ends 2 .0 cm above the Carina . A transesophageal tube courses below the level of the diaphragm , however the tip can not be visualized . Lung volumes are low , however grossly clear . Bibasilar atelectasis is moderately increased . No pleural effusion or pneumothorax . Severe widening of the mediastinum is unchanged from ___ .
    OUTPUT:
    
1 . Bibasilar and retrocardiac opacification is significantly increased from ___ . This likely represents worsening atelectasis , however in the appropriate clinical setting pneumonia can not be excluded . 2 . Severe widening of the mediastinum is unchanged from ___ . CT is recommended for further evaluation .