Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post tracheostomy with the tube projecting over the trachea . An enteric tube courses below the level of the diaphragm and coils in the stomach . The cardiomediastinal and hilar contours are within normal limits . Atelectasis is noted at the left lung base , otherwise the lung fields are clear . There is no pneumothorax , fracture or dislocation . Limited assessment of the abdomen is unremarkable .
    OUTPUT:
    
No pneumothorax . Significant volume loss , left lower lobe , could be due to retained secretions .