Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy tube again terminates 4 .2 cm above the carina . Nasogastric tube courses into the stomach . There is no significant pneumothorax or pleural effusion . Lung volumes are low with persistent lower lobe opacities , right greater than left . Heart size is top normal .
    OUTPUT:
    
Low lung volumes and bibasilar aspiration .