Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Overlying trauma board and support devices limits assessment . Heart size is normal . Mediastinal and hilar contours are unremarkable . Lungs are grossly clear . No large pleural effusion or pneumothorax is seen , however , the extreme right costophrenic angle is excluded from the field of view . No displaced fractures are identified .
    OUTPUT:
    
Limited exam . No gross abnormality seen within the chest .